What Does It Mean?

This generic powertrain diagnostic trouble code (DTC) typically applies to many OBD-II vehicles. This may include, but is not limited to, vehicles from Mazda, Ford, Honda, Chevrolet, Jeep, Dodge, etc.

When a P060F code is stored, it means the Powertrain Control Module (PCM) has detected an internal performance error with the Engine Coolant Temperature (ECT) sensor circuit. Other controllers may also detect an internal PCM performance error (in the ECT sensor circuit) and contribute to storing a P060F.

The internal control module monitoring processors are responsible for various controller self-test tasks and the overall responsibility of the internal control module. The input and output signals of the ECT sensor are self-tested and are constantly monitored by the PCM and other associated controllers. The Transmission Control Module (TCM), Traction Control System Module (TCSM), and other controllers are subject to interaction with the ECT sensor.

ECT sensors are composed of a thermistor that is dipped in hard resin and sealed in a metal or plastic housing. Brass is the most commonly used metal as the ECT sensor housing material. The ECT housing is designed to be screwed into a coolant passage in the engine intake manifold, cylinder head, or block. When hot coolant flows through the passages and past the ECT sensor, the resistance level of the thermistor in the ECT sensor decreases. When the engine coolant decreases in temperature, the resistance increases and the ECT sensor circuit voltage is reduced accordingly. These resistance fluctuations (which cause circuit voltage variations) are interpreted by the PCM as changes in engine coolant temperature. ECT sensor input data is essential in calculating fuel delivery and ignition timing strategy.

Whenever the ignition is turned on and the PCM is powered up, self-tests of the internal ECT circuit are initiated. In addition to performing internal controller self-tests, the Controller Area Network (CAN) also compares the signals from each individual module to ensure all controllers are functioning correctly. These tests are performed simultaneously.

If the PCM detects a discrepancy between any of the onboard controllers, which would indicate an internal ECT sensor error, a P060F code will be stored and a Malfunction Indicator Lamp (MIL) may be illuminated. Several failure cycles may be required for MIL illumination, depending on the perceived severity of the malfunction.

Photo of a PCM with the cover removed:

Powertrain Control Module PCM
How Serious is this DTC?

Internal control module processor codes should be classified as severe. A stored P060F code could lead to serious drivability and fuel economy problems, suddenly and without warning.
What are Some of the Symptoms of the Code?

Symptoms of a P060F trouble code may include:

Drivability issues (especially during startup)
Harsh or erratic automatic transmission shifting
Reduced fuel efficiency
Rough idle or stalling (especially at idle)
Hesitation during acceleration

What are Some of the Common Causes of the Code?

Causes

of this code may include:
Faulty controller or controller programming error
Open or shorted circuit or connectors in the CAN bus
Insufficient control module ground
Faulty ECT sensor
Corroded electrical connector (ECT)
Open or shorted circuits between the ECT sensor and the PCM

What are the P060F Troubleshooting Steps?

Even for the most experienced and well-equipped professional technician, diagnosing a P060F code can prove very difficult. There is also the issue of reprogramming. Without the necessary reprogramming equipment, it will be impossible to replace a faulty controller and perform a successful repair.

If ECM/PCM power codes are present, they will obviously need to be corrected before attempting to diagnose a P060F. Furthermore, if there are ECT sensor codes, these should be diagnosed and repaired first.

Several preliminary tests can be performed before declaring an individual controller faulty. A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable vehicle information source will be needed. An infrared thermometer with a laser pointer may be helpful.

Connect the scanner to the vehicle’s diagnostic port and retrieve all stored codes and freeze frame data. You will want to note this information, just in case the code proves to be intermittent. After recording all relevant information, clear the codes and test drive the vehicle until the code resets or the PCM enters readiness mode. If the PCM enters readiness mode, the code is intermittent and will be more difficult to diagnose. The condition which caused the P060F to be stored may even need to worsen before a diagnosis can be made. If the code resets, continue with this short list of preliminary tests.

When trying to diagnose a P060F, information can be your best tool. Research your vehicle information source for Technical Service Bulletins (TSBs) that parallel the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. If you find the right TSB, it can provide diagnostic information that will assist you significantly.

Use your vehicle information source to obtain connector face views, connector pinout diagrams, component locators, wiring schematics, and diagnostic flowcharts related to the code and the specific vehicle.

Use the DVOM to test the controller power fuses and relays. Test and replace blown fuses as needed. Fuses should be tested with the circuit loaded.

If all fuses and relays appear to be working as expected, a visual inspection of the wiring and harnesses related to the controller is in order. You will also want to check the chassis and engine ground junctions. Use your vehicle information source to obtain ground locations for the related circuits. Use the DVOM to test ground integrity.

Visually inspect the system controllers for signs of water, heat, or collision damage. Any damaged controller, especially by water, should be considered faulty.

If the controller power and ground circuits are intact, suspect a faulty controller or a controller programming error. Replacing the controller will require reprogramming. In some cases, you can purchase pre-programmed controllers through aftermarket sources. Other vehicles/controllers will require onboard reprogramming that can only be performed by a dealership or another qualified source.

Testing the ECT Sensor and Circuits

Any stored ECT sensor-related code warrants checking to ensure the engine is not overheating. It should be full of coolant and operating within the acceptable temperature range.

Probe the ECT sensor connector reference circuit pin using the DVOM’s positive test lead. Use the negative test lead to probe the ground pin.

With the key on and engine off (KOEO), test for reference voltage (usually 5 volts) and a ground at the ECT sensor connector.

If reference voltage and ground are present on the respective connector pins, plug the sensor connector back in. Probe the ECT sensor signal circuit with the DVOM’s positive test lead (negative probe connected to a known good engine ground). Use the infrared thermometer to check the actual coolant temperature. Consult the temperature-to-voltage chart (found in the vehicle information source). With it, you can determine if the ECT sensor is functioning correctly by comparing the actual voltage with the desired voltage.

If the ECT sensor does not reflect the correct amount of voltage (based on the actual coolant temperature), suspect it is faulty.

If the ECT sensor signal circuit reflects the correct voltage level, use the DVOM to test the signal circuit at the PCM connector. If there is no sensor signal at the PCM connector but it is detected at the sensor connector, an open circuit exists between the two components.

Unlike most other codes, P060F is likely caused by a faulty controller or a controller programming error
Test system ground integrity by connecting the DVOM’s negative test lead to ground and the positive test lead to battery voltage

What does it mean?

This generic powertrain diagnostic trouble code (DTC) typically applies to many OBD-II vehicles. This may include, but is not limited to, vehicles from Jeep, Mazda, Ford, Dodge, etc.

A stored P0610 code means that the Powertrain Control Module (PCM) has detected an internal control module problem. The malfunction is related to the part of the PCM that recognizes, monitors, and controls specific vehicle options.

Whenever the ignition is turned on and the PCM is powered up, controller self-tests are performed. In addition to running internal controller self-tests, the Controller Area Network (CAN) also compares signals from each individual module to ensure the various controllers are communicating correctly.

If the PCM does not recognize the vehicle’s equipment options or if certain option features do not match the Vehicle Identification Number (and another protocol), a P0610 code will be stored and a Malfunction Indicator Lamp (MIL) may illuminate. Depending on the perceived severity of the malfunction, several failure cycles may be required for MIL illumination.

Photo of a PCM with the cover removed:

P0610 Powertrain Control Module PCM
How severe is this DTC?

Internal control module codes should always be taken seriously. A stored P0610 code could lead to various driving problems, including a no-start condition.
What are some of the symptoms of the code?

Symptoms of a P0610 fault code may include:

Engine driveability issues
Irregular transmission shifting (automatic)
Other stored codes
Reduced fuel economy

What are some common causes of the code?

Causes

of this code may include:

Faulty PCM
PCM programming error
Open or shorted circuit or connectors in the CAN harness
PCM power source failure
Insufficient control module ground

What are the P0610 troubleshooting steps?

Even for the most experienced and well-equipped professional technician, diagnosing a P0610 code can prove very challenging. There is also the issue of reprogramming. Without the necessary reprogramming equipment, it will be impossible to replace a faulty controller and perform a successful repair.

If ECM/PCM power codes are present, they will obviously need to be rectified before attempting to diagnose a P0610.

There are several preliminary tests that can be performed before declaring a controller faulty. A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable vehicle information source will be required.

Connect the scanner to the vehicle’s diagnostic port and retrieve all stored codes and freeze frame data. You’ll want to note this information, just in case the code proves to be intermittent. After recording all relevant information, clear the codes and test-drive the vehicle until the code resets or the PCM enters readiness mode. If the PCM enters readiness mode, the code is intermittent and will be more difficult to diagnose. The condition that caused the P0610 to be stored may even need to worsen before a diagnosis can be made. If the code resets, continue with this short list of preliminary tests.

When trying to diagnose a P0610, information can be your best tool. Search your vehicle information source for Technical Service Bulletins (TSBs) that correlate the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. If you find the right TSB, it can provide diagnostic information that will assist you significantly.

Use your vehicle information source to obtain connector face views, connector pinout diagrams, component locators, wiring schematics, and diagnostic flowcharts related to the specific code and vehicle in question.

Use the DVOM to test the controller’s power fuses and relays. Test and replace blown fuses as needed. Fuses should be tested with the circuit loaded.

If all fuses and relays appear to be functioning as expected, a visual inspection of the wiring and harnesses related to the controller is necessary. You will also want to check the chassis and engine ground junctions. Use your vehicle information source to obtain ground locations for the related circuits. Use the DVOM to test ground integrity.

Visually inspect the system controllers for signs of water, heat, or collision damage. Any damaged controller, especially by water, should be considered faulty.

If the controller’s power and ground circuits are intact, suspect a faulty controller or a controller programming error. Replacing the controller will require reprogramming. In some cases, you can purchase pre-programmed controllers through aftermarket sources. Other vehicles/controllers will require on-board reprogramming that can only be performed by a dealership or another qualified source.

Unlike most other codes, P0610 is likely caused by a faulty controller or a controller programming error
Test the system ground integrity by connecting the DVOM’s negative test lead to ground and the positive test lead to battery voltage

What Does It Mean?

---

This generic powertrain diagnostic trouble code (DTC) generally applies to many OBD-II vehicles. This may include, but is not limited to, vehicles from Ford (Powerstroke), Hyundai, Toyota, etc.

A stored P0611 code means that the Powertrain Control Module (PCM) has detected a problem with the internal control module’s performance. The malfunction is related to the part of the PCM that controls the fuel injector function.

In some cases, the fuel injector controller may be separate from the PCM. Most often, it is integrated into the PCM. This saves space, time, and money for car manufacturers.

Whenever the ignition is turned on and the PCM is powered, several controller self-tests are performed. In addition to running internal controller self-tests, the Controller Area Network (CAN) is used to compare signals from each individual module to ensure that the various controllers interact correctly.

If the PCM finds that the fuel injector function cannot be effectively controlled, a P0611 code will be stored, and a Malfunction Indicator Lamp (MIL) may illuminate. Depending on the perceived severity of the malfunction, several failure cycles may be required for the MIL to light up.

A Fuel Pump Control Module:

P0611 Fuel Pump Control Module

How Severe Is This DTC?

Internal control module codes should always be taken seriously. A stored P0611 code can lead to various driving problems, including a no-start condition.

What Are Some of the Symptoms of the Code?

Symptoms of a P0611 fault code may include:

• Engine driving issues
• Reduced engine performance
• Reduced fuel efficiency
• Other stored codes

What Are Some Common Causes of the Code?

Causes of this code may include:

• Faulty PCM
• PCM programming error
• Open or shorted circuit or connectors in the CAN harness
• PCM power supply failure
• Insufficient control module ground

What Are the P0611 Troubleshooting Steps?

Unfortunately, even the most experienced and well-equipped professional technician may find diagnosing a P0611 code quite challenging. There is also the issue of reprogramming. Without the necessary reprogramming equipment, it will be impossible to replace a faulty controller and perform a successful repair.

If ECM/PCM power codes are present, they must be repaired before attempting to diagnose a P0611.

There are several preliminary tests that can be performed before declaring a controller faulty. A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable vehicle information source will be needed.

Connect the scanner to the vehicle’s diagnostic port and retrieve all stored codes and freeze frame data. You will want to note this information, just in case the code turns out to be intermittent. After recording all relevant information, clear the codes and test the vehicle until the code resets or the PCM enters readiness mode. If the PCM enters readiness mode, the code is intermittent and will be more difficult to diagnose. The condition that led to the P0611 being stored may even need to worsen before a diagnosis can be made. If the code resets, continue with this short list of preliminary tests.

When trying to diagnose a P0611, information can be your best tool. Search your vehicle information source for Technical Service Bulletins (TSBs) that correlate the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. If you find the right TSB, it can provide diagnostic information that will help you significantly.

Use your vehicle information source to obtain connector face views, connector pinout diagrams, component locators, wiring schematics, and diagnostic flowcharts related to the code and the specific vehicle.

Use the DVOM to test the controller’s power fuses and relays. Test and replace blown fuses as needed. Fuses should be tested with the circuit loaded.

If all fuses and relays appear to be working as expected, a visual inspection of the wiring and harnesses related to the controller is necessary. You will also want to check the chassis and engine ground junctions. Use your vehicle information source to obtain ground locations for related circuits. Use the DVOM to test ground integrity.

Visually inspect the system controllers for signs of water, heat, or collision damage. Any damaged controller, especially by water, should be considered faulty.

If the controller’s power and ground circuits are intact, suspect a faulty controller or a controller programming error. Replacing the controller will require reprogramming. In some cases, you can purchase pre-programmed controllers through aftermarket sources. Other vehicles/controllers will require onboard reprogramming that can only be performed by a dealer or another qualified source.

Unlike most other codes, P0611 is likely caused by a faulty controller or a controller programming error
Test the ground system integrity by connecting the DVOM’s negative test lead to ground and the positive test lead to battery voltage

What does it mean?

This generic powertrain diagnostic trouble code (DTC) generally applies to many OBD-II vehicles. This may include, but is not limited to, Chevrolet, GMC, Dodge, Ram vehicles, etc.

A stored P0612 code means the Powertrain Control Module (PCM) has detected a malfunction in its internal control module. The issue is related to the part of the PCM that controls the fuel injector control module relay.

In some cases, the fuel injector controller may be separate from the PCM. Most often, it is integrated into the PCM. This saves space, time, and money for car manufacturers.

Similarly, the fuel injector control module relay may be an integral part of the PCM or it may be a conventional relay located away from the PCM. Consult a reliable vehicle information source to determine the location of the fuel injector control relay for the specific vehicle.

Whenever the ignition is turned on and the PCM is powered, several controller self-tests are performed. In addition to running internal controller self-tests, the Controller Area Network (CAN) is used to compare signals from each individual module to ensure that the various controllers interact correctly.

When monitoring the fuel injector relay control function, if the PCM detects a problem, a P0612 code will be stored and a Malfunction Indicator Lamp (MIL) may illuminate. Depending on the perceived severity of the malfunction, several failure cycles may be required for the MIL to light up.

A fuel pump control module:

P0612 Fuel Pump Control Module
How serious is this DTC?

Internal control module codes should always be taken seriously. A stored P0612 code could lead to various driving problems, including a no-start condition.
What are some of the symptoms of the code?

Symptoms of a P0612 fault code may include:

• Engine driveability issues
• Reduced engine performance
• Reduced fuel efficiency
• Other stored codes

What are some common causes of the code?

Causes of this code may include:

• Faulty PCM
• PCM programming error
• Faulty PCM power relay
• Open or shorted circuit or connectors in the CAN bus
• PCM power supply failure
• Insufficient control module ground

What are the P0612 troubleshooting steps?

Unfortunately, even the most experienced and well-equipped professional technician may find diagnosing a P0612 code quite challenging. There is also the issue of reprogramming. Without the necessary reprogramming equipment, it will be impossible to replace a faulty controller and perform a successful repair.

If ECM/PCM power codes are present, they must be repaired before attempting to diagnose a P0612.

There are several preliminary tests that can be performed before declaring a controller faulty. A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable vehicle information source will be required.

Connect the scanner to the vehicle’s diagnostic port and retrieve all stored codes and freeze frame data. You’ll want to note this information, just in case the code turns out to be intermittent. After recording all relevant information, clear the codes and test the vehicle until the code resets or the PCM enters readiness mode. If the PCM enters readiness mode, the code is intermittent and will be more difficult to diagnose. The condition that caused the P0612 to be stored may even need to worsen before a diagnosis can be made. If the code resets, continue with this short list of preliminary tests.

When trying to diagnose a P0612, information can be your best tool. Search your vehicle information source for Technical Service Bulletins (TSBs) that correlate the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. If you find the right TSB, it can provide diagnostic information that will significantly assist you.

Use your vehicle information source to obtain connector face views, connector pinout diagrams, component locators, wiring schematics, and diagnostic flowcharts related to the code and the specific vehicle.

Use the DVOM to test the controller’s power fuses and relays. Pay special attention to the fuel injector controller relay if it is an external relay. Follow the manufacturer’s recommendations for testing the relay with the DVOM. If the fuel injector control relay is faulty and integrated into the PCM, the PCM must be replaced and reprogrammed. Replace blown fuses as needed. Fuses should be tested under load.

If all fuses and relays appear to be functioning as expected, a visual inspection of the wiring and harnesses related to the controller is necessary. You will also want to check the chassis and engine ground connections. Use your vehicle information source to obtain ground locations for related circuits. Use the DVOM to test ground integrity.

Visually inspect the system controllers for signs of water, heat, or collision damage. Any controller

What does it mean?

This generic powertrain diagnostic trouble code (DTC) generally applies to many OBD-II vehicles. This may include, but is not limited to, vehicles from Chrysler, Dodge, Jeep, Audi, Land Rover, etc.

 

A stored code P0613 means that the Transmission Control Module (TCM) has detected a malfunction of the internal control processor.

In some cases, the TCM may be separate from the Powertrain Control Module (PCM). Most often, it is integrated into the PCM. This saves space, time, and money for car manufacturers.

Whenever the ignition is turned on and the PCM is powered, several controller self-tests are performed. In addition to running internal controller self-tests, the Controller Area Network (CAN) is used to compare signals from each individual module to ensure that the various controllers interact correctly.

When monitoring the TCM function, if the PCM detects a problem, a P0613 code will be stored and a Malfunction Indicator Lamp (MIL) may illuminate. Depending on the perceived severity of the malfunction, several failure cycles may be required for the MIL to illuminate.

A Transmission Control Module:

P0613 Transmission Control Module
How severe is this DTC?

Internal control module codes should always be taken seriously. A stored P0613 code can lead to various automatic transmission problems, including delayed shifting, erratic shifting, or failure to shift.
What are some of the symptoms of the code?

Symptoms of a P0613 fault code may include:

Erratic transmission shifting patterns
Harsh transmission shifting
Inoperative or inaccurate speedometer/odometer
Other stored TCM/PCM codes

What are some common causes of the code?

Causes

of this code may include:

Faulty TCM/PCM
TCM/PCM programming error
Open or shorted circuit or connectors in the CAN harness
TCM/PCM power source failure
Insufficient control module ground

What are the P0613 troubleshooting steps?

Unfortunately, even the most experienced and well-equipped professional technician may find diagnosing a P0613 code quite difficult. There is also the issue of reprogramming. Without the necessary reprogramming equipment, it will be impossible to replace a faulty controller and perform a successful repair.

If TCM/PCM power codes are present, they will need to be repaired before attempting to diagnose a P0613.

There are several preliminary tests that can be performed before declaring a controller faulty. A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable vehicle information source will be required.

Connect the scanner to the vehicle’s diagnostic port and retrieve all stored codes and freeze frame data. You will want to note this information, just in case the code proves to be intermittent. After recording all relevant information, clear the codes and test the vehicle until the code resets or the PCM enters readiness mode. If the TCM/PCM enters readiness mode, the code is intermittent and will be more difficult to diagnose. The condition that caused the P0613 to be stored may even need to worsen before a diagnosis can be made. If the code resets, continue with this short list of preliminary tests.

When trying to diagnose a P0613, information can be your best tool. Search your vehicle information source for Technical Service Bulletins (TSBs) that correlate the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. If you find the right TSB, it can provide diagnostic information that will significantly assist you.

Use your vehicle information source to obtain connector face views, connector pinout diagrams, component locators, wiring schematics, and diagnostic flowcharts related to the code and the specific vehicle.

Use the DVOM to test the controller’s power fuses and relays. Replace blown fuses as needed. Fuses should be tested with the circuit loaded.

If all fuses and relays appear to be functioning as expected, a visual inspection of the wiring and harnesses related to the controller is necessary. You will also want to check the chassis and engine ground connections. Use your vehicle information source to obtain ground locations for the related circuits. Use the DVOM to test ground integrity.

Visually inspect the system controllers for signs of water, heat, or collision damage. Any damaged controller, especially by water, should be considered faulty.

If the controller’s power and ground circuits are intact, suspect a faulty controller or a controller programming error. Replacing the controller will require reprogramming. In some cases, you can purchase pre-programmed controllers through aftermarket sources. Other vehicles/controllers will require onboard reprogramming that can only be performed by a dealer or another qualified source.

Unlike most other codes, P0613 is likely caused by a faulty controller or a controller programming error
Test the system’s ground integrity by connecting the DVOM’s negative test lead to ground and the positive test lead to battery voltage

What Does It Mean?

This generic powertrain diagnostic trouble code (DTC) typically applies to many OBD-II vehicles. This may include, but is not limited to, vehicles from Ford, VW, Nissan, Volvo, Mazda, Audi, etc.

A stored code P0614 means that a compatibility issue has occurred between the Engine Control Module (ECM) and the Transmission Control Module (TCM).

In some cases, the ECM and TCM may be separate from each other. Most often, they are integrated into a single module called the Powertrain Control Module (PCM). This increases controller efficiency while also saving space, time, and money for car manufacturers.

Whenever the ignition is turned on and the PCM is powered up, several controller self-tests are performed. In addition to running internal controller self-tests, the Controller Area Network (CAN) is used to compare signals from each individual module to ensure that the various controllers interact correctly.

When monitoring ECM/TCM compatibility, if an anomaly is detected, a P0614 code will be stored, and a Malfunction Indicator Lamp (MIL) may illuminate. Depending on the perceived severity of the malfunction, multiple failure cycles may be required for the MIL to light up.

Example of a Transmission Control Module:

P0614 Transmission Control Module
How Severe Is This DTC?

Internal control module codes should always be taken seriously. A stored P0614 code could lead to various driving and automatic transmission problems.
What Are Some of the Symptoms of the Code?

Symptoms of a P0614 trouble code may include:

Engine driving issues
Engine stalling or failure to start
Irregular transmission shifting patterns
Harsh transmission shifting
Unusable or inaccurate odometer/speedometer
Other stored ECM/TCM codes

What Are Some Common Causes of the Code?

Causes

of this code may include:

Faulty ECM/TCM
ECM/TCM programming error
Open or shorted circuit or connectors in the CAN harness
ECM/TCM power source failure
Insufficient control module ground

What Are the P0614 Troubleshooting Steps?

Unfortunately, even the most experienced and well-equipped professional technician may find diagnosing a P0614 code quite challenging. There is also the issue of reprogramming. Without the necessary reprogramming equipment, it will be impossible to replace a faulty controller and perform a successful repair.

If any ECM/TCM power codes are present, they will need to be repaired before attempting to diagnose a P0614.

There are several preliminary tests that can be performed before declaring a controller faulty. A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable vehicle information source will be required.

Connect the scanner to the vehicle’s diagnostic port and retrieve all stored codes and freeze frame data. You will want to note this information, just in case the code turns out to be intermittent. After recording all relevant information, clear the codes and test the vehicle until the code resets or the PCM enters readiness mode. If the PCM enters readiness mode, the code is intermittent and will be more difficult to diagnose. The condition that caused the P0614 to be stored may even need to worsen before a diagnosis can be made. If the code resets, proceed with this short list of preliminary tests.

When trying to diagnose a P0614, information can be your best tool. Check your vehicle information source for Technical Service Bulletins (TSBs) that parallel the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. If you find the right TSB, it can provide diagnostic information that will help you significantly.

Use your vehicle information source to obtain connector face views, connector pinout diagrams, component locators, wiring schematics, and diagnostic flowcharts related to the code and the specific vehicle.

Use the DVOM to test the controller’s power fuses and relays. Replace blown fuses as needed. Fuses should be tested with the circuit loaded.

If all fuses and relays appear to be functioning as expected, a visual inspection of the wiring and harnesses related to the controller is necessary. You will also want to check the chassis and engine ground junctions. Use your vehicle information source to obtain ground locations for related circuits. Use the DVOM to test ground integrity.

Visually inspect the system controllers for signs of water, heat, or collision damage. Any damaged controller, especially by water, should be considered faulty.

If the controller’s power and ground circuits are intact, suspect a faulty controller or a controller programming error. Replacing the controller will require reprogramming. In some cases, you can purchase pre-programmed controllers through aftermarket sources. Other vehicles/controllers will require onboard reprogramming that can only be performed by a dealer or another qualified source.

Unlike most other codes, P0614 is likely caused by a faulty controller or a controller programming error
Test the system ground integrity by connecting the DVOM’s negative test lead to ground and the positive test lead to battery voltage

This is a generic diagnostic trouble code (DTC) and applies to many OBD-II vehicles (1996 and newer). This may include, but is not limited to, vehicles from Cadillac, Nissan, Chevy, Buick, Honda, Acura, Infiniti, Peugeot, Toyota, GMC, Chevrolet, Mazda, Ford, Subaru, etc. Although generic, the exact repair steps may vary depending on the year, make, model, and powertrain configuration.

 

Trouble code P0615 is associated with the starter relay circuit, and in most cases, the vehicle will not start. It is set when the Powertrain Control Module (PCM) detects a malfunction in the starter relay circuit, also referred to as the ignition switch circuit. Several codes can be set when the PCM detects incorrect signals in the starter relay circuit depending on the specific malfunction. The most common codes associated with this circuit are P0615, P0616, and P0617.

The purpose of the starter relay circuit is to provide a power source to the starter to crank the engine and start the vehicle. Depending on the specific vehicle and transmission configuration, several components are involved in this process. This circuit starts at the battery and includes the ignition switch, fuses, starter solenoid, starter relay, and various safety devices such as clutch position sensors and neutral safety switches.

Code P0615 is set by the PCM when it detects a general malfunction in the starter relay circuit.

Starter Relay in a Ford:

Starter Relay
How severe is this DTC?

The severity of this code can vary greatly from a simple illuminated check engine light on a vehicle that starts and runs, to an automobile that does not start at all.
What are some of the symptoms of the code?

Symptoms of a P0615 trouble code may include:

Engine does not crank
Sporadic no-crank events
Check Engine Light illuminated

What are some of the common causes of the code?

Causes

of this P0615 code may include:

Faulty ignition switch
Faulty starter relay
Faulty starter solenoid
Blown fuse or fusible link (if applicable)
Corroded or damaged connector
Corroded or damaged battery cable
Faulty or damaged wiring
Faulty PCM
Faulty starter

What are the P0615 troubleshooting steps?

The first step in the troubleshooting process for any malfunction is to search for Technical Service Bulletins (TSBs) for the specific vehicle by year, model, and powertrain. In some circumstances, this can save a lot of time in the long run by pointing you in the right direction.

The second step is to consult the vehicle-specific technical data to see if a fuse is incorporated into the starter relay circuit and check if it is blown, if applicable. If the fuse is good, you need to locate all components associated with the starter relay circuit and check for obvious damage. Perform a thorough visual inspection to check that the associated wiring has no obvious defects such as scraping, rubbing, bare wires, or burn marks. Then, check the connectors and connections for security, corrosion, and damaged pins. This process should include all wiring connectors and connections to the battery, ignition switch, PCM, starter, starter relay, and starter solenoid.
Advanced Steps

Advanced steps become very vehicle-specific and require appropriate advanced equipment to perform accurately. These procedures require a digital multimeter and the vehicle-specific technical references. Voltage requirements will be highly based on the specific year and model of the vehicle.
Voltage Checks

Battery voltage should be appropriate at 12 volts, and the starter should have battery voltage with the ignition switch in the start position. The presence of voltage when the starter does not engage is an indication of a faulty starter or starter solenoid. A lack of voltage indicates a faulty ignition switch or a wiring problem.

If this process identifies a missing power source or ground, continuity tests may be required to check the integrity of the wiring, ignition switch, and other components. Continuity tests should always be performed with the power disconnected from the circuit, and normal readings for wiring and connections should be 0 ohms of resistance, unless otherwise indicated by the technical data. Resistance or a lack of continuity is an indication of faulty wiring that is open or shorted and must be repaired or replaced.
What are the common repairs for this code?

Replacing the ignition switch
Replacing a blown fuse or fusible link (if applicable)
Cleaning corrosion from connectors
Repairing or replacing wiring
Repairing or replacing battery cables or terminals
Replacing the starter relay
Replacing the starter solenoid
Replacing the starter
Flashing or replacing the PCM

Common mistakes can include:

Replacing the starter or PCM when damaged wiring or another component is the issue.

I hope the information in this article has been helpful in pointing you in the right direction to fix the problem with your starter relay circuit error code. This article is strictly informational, and the technical data and service bulletins specific to your vehicle should always take priority.

What Does It Mean?

This is a generic diagnostic trouble code (DTC) and applies to many OBD-II vehicles (1996-newer). This may include, but is not limited to, vehicles from Cadillac, Nissan, Chevy, Buick, Honda, Acura, Infiniti, Peugeot, Toyota, GMC, Chevrolet, Mazda, Ford, Subaru, etc. Although generic, the exact repair steps may vary depending on the year, make, model, and powertrain configuration.

The fault code P0616 is associated with the starter relay circuit, and in most cases, the vehicle will not start. It occurs when the Powertrain Control Module (PCM) detects a malfunction in the starter relay circuit, also known as the ignition switch circuit. Several codes can be set when the PCM detects incorrect signals in the starter relay circuit depending on the specific malfunction. The most common codes associated with this circuit are P0615, P0616, and P0617.

The purpose of the starter relay circuit is to provide a power source to the starter to crank the engine and start the vehicle. Depending on the specific vehicle and transmission configuration, multiple components are involved in this process. This circuit starts at the battery and includes the ignition switch, fuses, starter solenoid, starter relay, and various safety devices such as clutch position sensors and neutral safety switches.

The P0616 code is set by the PCM when it detects a low voltage condition in the starter relay circuit.

Starter Relay in a Ford:

Starter Relay
How Severe Is This DTC?

The severity of this code can vary greatly from a simple check engine light on a vehicle that starts and runs to an automobile that does not start at all.
What Are Some of the Symptoms of the Code?

Symptoms of a P0616 fault code may include:

Engine does not crank
Sporadic no-crank events
Check engine light illuminated

What Are Some of the Common Causes of the Code?

Causes

of this P0616 code may include:

Faulty ignition switch
Faulty starter relay
Faulty starter solenoid
Blown fuse or fusible link (if applicable)
Corroded or damaged connector
Corroded or damaged battery cable
Faulty or damaged wiring
Faulty PCM
Faulty starter

What Are the Troubleshooting Steps for P0616?

The first step in the troubleshooting process for any malfunction is to search for Technical Service Bulletins (TSBs) for the specific vehicle by year, model, and powertrain. In some circumstances, this can save a lot of time in the long run by pointing you in the right direction.

The second step is to consult the vehicle-specific technical data to see if a fuse is incorporated into the starter relay circuit and check if it is blown, if applicable. If the fuse is good, you need to locate all components associated with the starter relay circuit and check for obvious damage. Perform a thorough visual inspection to ensure the associated wiring has no obvious faults such as chafing, rubbing, bare wires, or burn marks. Then, check the connectors and connections for security, corrosion, and damaged pins. This process should include all wiring connectors and connections to the battery, ignition switch, PCM, starter, starter relay, and starter solenoid.
Advanced Steps

Advanced steps become very vehicle-specific and require appropriate advanced equipment to perform accurately. These procedures require a digital multimeter and vehicle-specific technical references. Voltage requirements will be highly dependent on the specific year and model of the vehicle.
Voltage Checks

The battery voltage should be appropriate at 12 volts, and the starter should have battery voltage with the ignition switch in the start position. The presence of voltage when the starter does not engage is an indication of a faulty starter or starter solenoid. A lack of voltage indicates a faulty ignition switch or a wiring problem.

If this process identifies the absence of a power source or ground, continuity tests may be required to check the integrity of the wiring, ignition switch, and other components. Continuity tests should always be performed with the power disconnected from the circuit, and normal readings for wiring and connections should be 0 ohms of resistance, unless otherwise specified by the technical data. Resistance or lack of continuity indicates faulty wiring that is open or shorted and must be repaired or replaced.
What Are the Common Repairs for This Code?

Replacing the ignition switch
Replacing the blown fuse or fusible link (if applicable)
Cleaning corrosion from connectors
Repairing or replacing wiring
Repairing or replacing battery cables or terminals
Replacing the starter relay
Replacing the starter solenoid
Replacing the starter
Flashing or replacing the PCM

Common mistakes may include:

Replacing the starter or PCM when damaged wiring or another component is the issue.

I hope the information in this article has been helpful in pointing you in the right direction to correct the issue with your starter relay circuit fault code. This article is strictly informational, and the technical data and service bulletins specific to your vehicle should always take priority.

What Does It Mean?

This is a generic diagnostic trouble code (DTC) and applies to many OBD-II vehicles (1996-newer). This may include, but is not limited to, vehicles from Cadillac, Nissan, Chevy, Buick, Honda, Acura, Infiniti, Peugeot, Toyota, GMC, Chevrolet, Mazda, Ford, Subaru, etc. Although generic, the exact repair steps may vary depending on the year, make, model, and powertrain configuration.

 

The P0617 fault code is associated with the starter relay circuit, and in most cases, the vehicle will not start. It is set when the Powertrain Control Module (PCM) detects a malfunction in the starter relay circuit, also known as the ignition switch circuit. Several codes can be set when the PCM detects incorrect signals in the starter relay circuit depending on the specific malfunction. The most common codes associated with this circuit are P0615, P0616, and P0617.

The purpose of the starter relay circuit is to provide a power source to the starter to crank the engine and start the vehicle. Depending on the specific vehicle and transmission configuration, several components are involved in this process. This circuit starts at the battery and includes the ignition switch, fuses, starter solenoid, starter relay, and various safety devices such as clutch position sensors and neutral safety switches.

The P0617 code is set by the PCM when it detects a high voltage situation in the starter relay circuit.

Starter Relay in a Ford:

Starter Relay
How Severe Is This DTC?

The severity of this code can vary greatly from a simple check engine light on a vehicle that starts and runs to an automobile that does not start at all.
What Are Some of the Symptoms of the Code?

Symptoms of a P0617 trouble code may include:

Engine does not crank
Sporadic no-crank events
Check Engine Light illuminated

What Are Some of the Common Causes of the Code?

Causes

of this P0617 code may include:

Faulty ignition switch
Faulty starter relay
Faulty starter solenoid
Blown fuse or fusible link (if applicable)
Corroded or damaged connector
Corroded or damaged battery cable
Faulty or damaged wiring
Faulty PCM
Faulty starter

What Are the P0617 Troubleshooting Steps?

The first step in the troubleshooting process for any malfunction is to search for Technical Service Bulletins (TSBs) for the specific vehicle by year, model, and powertrain. In some circumstances, this can save you a lot of time in the long run by pointing you in the right direction.

The second step is to consult the vehicle-specific technical data to see if a fuse is incorporated into the starter relay circuit and check if it is blown, if applicable. If the fuse is good, you need to locate all components associated with the starter relay circuit and check for obvious damage. Perform a thorough visual inspection to check that the associated wiring does not have obvious defects such as chafing, rubbing, bare wires, or burn spots. Then, check the connectors and connections for security, corrosion, and damaged pins. This process must include all wiring connectors and connections to the battery, ignition switch, PCM, starter, starter relay, and starter solenoid.
Advanced Steps

Advanced steps become very vehicle-specific and require appropriate advanced equipment to perform accurately. These procedures require a digital multimeter and vehicle-specific technical references. Voltage requirements will be highly based on the specific year and model of the vehicle.
Voltage Checks

The battery voltage should be appropriate at 12 volts, and the starter should have battery voltage with the ignition switch in the start position. The presence of voltage when the starter does not engage is an indication of a faulty starter or starter solenoid. A lack of voltage indicates a faulty ignition switch or a wiring problem.

If this process identifies the absence of a power source or ground, continuity tests may be required to check the integrity of the wiring, ignition switch, and other components. Continuity tests should always be performed with the power disconnected from the circuit, and normal readings for wiring and connections should be 0 ohms of resistance, unless otherwise indicated by the technical data. Resistance or a lack of continuity is an indication of faulty wiring that is open or shorted and must be repaired or replaced.
What Are the Common Repairs for This Code?

Replacing the ignition switch
Replacing a blown fuse or fusible link (if applicable)
Cleaning corrosion from connectors
Repairing or replacing wiring
Repairing or replacing battery cables or terminals
Replacing the starter relay
Replacing the starter solenoid
Replacing the starter
Flashing or replacing the PCM

Common mistakes may include:

Replacing the starter or PCM when damaged wiring or another component is the issue.

I hope the information contained in this article has been helpful for

What does it mean?

This generic powertrain diagnostic trouble code (DTC) generally applies to many OBD-II vehicles. This may include, but is not limited to, vehicles from Volkswagen VW, Ford, Nissan, etc.

 

A stored P0618 code means that the Powertrain Control Module (PCM) has detected a malfunction with the Alternative Fuel Control Module (AFCM). The issue occurred in the Keep Alive Memory (KAM) portion of the AFCM/PCM.

The P0618 code is limited to vehicles that use alternative fuels such as natural gas and electricity for propulsion.

In some cases, the AFCM and PCM may be separate from each other. Most often, they are integrated into a single module. This increases controller efficiency in addition to saving space, time, and money for car manufacturers.

KAM allows the PCM and other controllers to retain data even when the ignition is turned off or the battery is briefly disconnected.

Whenever the ignition is turned on and the PCM is powered up, several controller self-tests are performed. In addition to running internal controller self-tests, the Controller Area Network (CAN) is used to compare signals from each individual module to ensure that the various controllers interact correctly.

When monitoring the AFCM/PCM KAM capability, if a problem is detected, a P0618 code will be stored and a Malfunction Indicator Lamp (MIL) may be illuminated. Depending on the perceived severity of the malfunction, several failure cycles may be required for the MIL to light up.

Example photo of a fuel pump control module:

P0618 Fuel Pump Control Module
How severe is this DTC?

Internal control module codes should always be taken seriously. A stored P0618 code can lead to various drivability issues, as valuable controller memory may be lost.
What are some of the symptoms of the code?

Symptoms of a P0618 fault code may include:

Engine drivability problems
Engine stalling at idle
Delayed engine starting (especially when cold)
Other stored codes

What are some common causes of the code?

Causes

of this code may include:

Faulty AFCM/PCM
AFCM/PCM programming error
Open or shorted circuit or connectors in the CAN bus
AFCM/PCM power source failure
Insufficient control module ground

What are the troubleshooting steps for P0618?

Unfortunately, even the most experienced and well-equipped professional technician may find diagnosing a P0618 code quite challenging. There is also the issue of reprogramming. Without the necessary reprogramming equipment, it will be impossible to replace a faulty controller and perform a successful repair.

If AFCM/PCM power codes are present, they will need to be repaired before attempting to diagnose a P0618.

There are several preliminary tests that can be performed before declaring a controller faulty. A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable vehicle information source will be required.

Connect the scanner to the vehicle’s diagnostic port and retrieve all stored codes and freeze frame data. You will want to note this information, just in case the code turns out to be intermittent. After recording all relevant information, clear the codes and test the vehicle until the code resets or the PCM enters readiness mode. If the PCM enters readiness mode, the code is intermittent and will be more difficult to diagnose. The condition that caused the P0618 to be stored may even need to worsen before a diagnosis can be made. If the code resets, continue with this short list of preliminary tests.

When trying to diagnose a P0618, information can be your best tool. Search your vehicle information source for Technical Service Bulletins (TSBs) that correlate the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. If you find the right TSB, it can provide diagnostic information that will greatly assist you.

Use your vehicle information source to obtain connector face views, connector pinout diagrams, component locators, wiring diagrams, and diagnostic flowcharts related to the code and the specific vehicle.

Use the DVOM to test the controller’s power fuses and relays. Replace blown fuses as needed. Fuses should be tested with the circuit loaded.

If all fuses and relays appear to be functioning as expected, a visual inspection of the wiring and harnesses related to the controller is necessary. You will also want to check the chassis and engine ground junctions. Use your vehicle information source to obtain ground locations for the related circuits. Use the DVOM to test ground integrity.

Visually inspect the system controllers for signs of water, heat, or collision damage. Any damaged controller, especially by water, should be considered faulty.

If the controller’s power and ground circuits are intact, suspect a faulty controller or a controller programming error. Replacing the controller will require reprogramming. In some cases, you can purchase controller reprogramming through aftermarket sources. Other vehicles/controllers will require onboard reprogramming that can only be performed by a dealership or another qualified source.

Unlike most other codes, P0618 is likely caused by a faulty controller or a controller programming error
Test the system ground integrity by connecting the DVOM’s negative test lead to ground and the positive test lead to battery voltage