How severe is this DTC?

A P2167 should be considered severe as it can render the vehicle undrivable.

What are some symptoms of the code?

Symptoms of a P2167 trouble code may include:

• Unresponsive accelerator pedal
• Limited or no acceleration
• Engine stalling at idle
• Hesitation during acceleration
• Inoperative cruise control

What are some common causes of the code?

Causes of this throttle/pedal position sensor P2167 code may include:

• Faulty TPS or PPS
• Open or shorted circuits between TPS, PPS and PCM
• Corroded electrical connectors
• Defective DBW actuator motor

What are the P2167 troubleshooting steps?

Check your vehicle information source for Technical Service Bulletins (TSB) that match the make, model and engine size of the vehicle in question. The symptoms and stored codes should also match. If you find a matching TSB, it will greatly assist your diagnosis.

My diagnosis for a P2167 code typically begins with a visual inspection of all cables and connectors related to the system. I would also check the throttle plate for signs of carbon buildup or damage. Clean carbon from the throttle body according to manufacturer recommendations and repair or replace any faulty wiring or components as needed, then retest the DBW system.

You will need a diagnostic scanner, digital volt/ohmmeter (DVOM) and a reliable vehicle information source to accurately diagnose this code.

Next, connect the scanner to the vehicle’s diagnostic port and retrieve all stored trouble codes. Record them in case you need the information later in your diagnosis. Also save any associated freeze frame data. These notes may prove useful, especially if P2167 is intermittent. Now clear the codes and test drive the vehicle to see if the code resets.

If the code immediately resets, voltage spikes and inconsistencies between the TPS, PPS and PCM can be detected using scanner data stream. Narrow the data stream to display only relevant data for faster response. If no spikes and/or inconsistencies are detected, use the DVOM to retrieve live data from each sensor signal wire. To retrieve live data with the DVOM, connect the positive test lead to the appropriate signal wire and the ground test lead to the ground circuit, then observe the DVOM display while operating the DBW. Look for voltage spikes when the accelerator is slowly operated from closed position to wide open throttle. Voltage typically ranges from 0.5 volts at throttle closed to 4.5 volts at wide open throttle, but consult your vehicle information source for exact specifications. If spikes or other irregularities are detected, suspect the tested sensor is faulty. An oscilloscope is also an excellent tool for testing sensor operation.

If the sensor operates as expected, disconnect all associated controllers and test individual circuits with the DVOM. Repair or replace system circuits as needed.

Only suspect a faulty PCM or PCM programming error after all system sensors and circuits have been verified.

Some manufacturers require the throttle body, throttle actuator motor and all throttle position sensors to be replaced as a single unit

How severe is this DTC?

A P2168 should be considered severe as it can render the vehicle undrivable.

What are some symptoms of the code?

Symptoms of a P2168 fault code may include:

• Unresponsive accelerator pedal
• Limited or no acceleration
• Engine stalling at idle
• Hesitation during acceleration
• Inoperative cruise control

What are some common causes of the code?

Causes of this throttle/pedal position sensor P2168 code may include:

• Faulty TPS or PPS
• Open or shorted circuits between TPS, PPS and PCM
• Corroded electrical connectors
• Defective DBW actuator motor

What are the P2168 troubleshooting steps?

Check your vehicle information source for Technical Service Bulletins (TSB) matching the make, model and engine size of the vehicle in question. Symptoms and stored codes should also match. If you find a matching TSB, this will greatly assist your diagnosis.

My diagnosis for a P2168 code typically begins with visual inspection of all cables and connectors related to the system. I would also check the throttle plate for signs of carbon buildup or damage. Clean carbon from the throttle body according to manufacturer recommendations and repair or replace any faulty wiring or components as needed, then retest the DBW system.

You will need a diagnostic scanner, digital volt/ohmmeter (DVOM) and reliable vehicle information source to accurately diagnose this code.

Next, connect the scanner to the vehicle’s diagnostic port and retrieve all stored fault codes. Record them in case you need the information later in your diagnosis. Also save any associated freeze frame data. These notes may prove useful, especially if P2168 is intermittent. Now clear the codes and test drive the vehicle to see if the code resets.

If the code immediately resets, voltage spikes and inconsistencies between TPS, PPS and PCM can be detected using scanner data stream. Narrow the data stream to display only relevant data for faster response. If no spikes and/or inconsistencies are detected, use the DVOM to retrieve live data from each sensor signal wire. To retrieve live data with DVOM, connect the positive test lead to the appropriate signal wire and the ground test lead to the ground circuit, then observe the DVOM display while operating the DBW. Look for voltage spikes when the accelerator is slowly operated from closed position to wide open throttle. Voltage typically ranges from 0.5 volts at throttle closed to 4.5 volts at wide open throttle, but consult your vehicle information source for exact specifications. If spikes or other irregularities are detected, suspect the tested sensor is faulty. An oscilloscope is also an excellent tool for testing sensor operation.

If the sensor operates as expected, disconnect all associated controllers and test individual circuits with the DVOM. Repair or replace system circuits as needed.

Only suspect a faulty PCM or PCM programming error after all system sensors and circuits have been verified.

Some manufacturers require the throttle body, throttle actuator motor and all throttle position sensors to be replaced as a single unit

P2169 Possible Causes

• Faulty exhaust pressure regulator vent solenoid
• Exhaust pressure regulator vent solenoid harness is open or shorted
• Poor electrical connection in exhaust pressure regulator solenoid circuit

What Does It Mean?

How to Fix Code P2169

Check the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

P2169 Possible Symptoms

Engine light on (or service engine soon warning light)

P2169 Meaning

Exhaust pressure regulator vent solenoid control circuit/open is the generic description for code P2169, but the manufacturer may have a different description.

How severe is this DTC?

I would say rather severe. In the field, we call a lack of fuel in the burned mixture a “lean” condition. When your engine is idling, you risk causing extreme damage to the engine in the short and long term. With this in mind, always follow your engine maintenance. There must be some diligence here, so let’s keep our engines running smoothly and efficiently. After all, they pull our weight to transport us daily.

What are some of the symptoms of the code?

Symptoms of a P216A fault code may include:

• Irregular engine performance
• Misfire
• Reduced fuel economy
• Rough idle
• Excessive smoke
• Engine noise(s)
• Lack of power
• Unable to climb steep hills
• Reduced throttle response

What are some common causes of the code?

Causes

of this P216A fuel injector group supply voltage code may include:

• Faulty or damaged fuel injector(s)
• Damaged wiring harness
• Internal wiring malfunction
• Internal ECM problem
• Connector issue

What are the troubleshooting steps for P216A?

Basic Step #1

The first recommended step is to locate the sensor “group” the manufacturer refers to. With this information, you can then find the physical location of the injector(s) and their circuits. This may involve removing many covers and/or engine components to visually access (if possible). Be sure to inspect the wiring harness for broken wires. Any worn insulation should be properly repaired with a shrink tube to prevent further and/or future issues.

Basic Step #2

Sometimes water and/or fluids can be “trapped” in the valleys where the injectors are installed. This increases the chances of the sensor connectors, among other electrical connections, corroding at a faster rate than normal. Ensure everything is as expected and that the connector tabs seal the connection properly. Feel free to use an electrical contact cleaner to make everything connect and disconnect smoothly, not to mention the increased electrical connectivity in the connections with the use of this product.

Basic Step #3

Check the circuit integrity by following the troubleshooting steps provided by your specific vehicle’s service manual. An example is to disconnect the supply voltage circuit from the ECM and the fuel injector, then using your multimeter, determine if the wires are in good working order or not.

A test I like to do to quickly determine if there is an open in a particular wire that would help with the P216A code is to perform a “continuity test.” Set your multimeter to RESISTANCE (aka ohm, impedance, etc.), touch one end to one end of the circuit and the other end to the other end. Any value higher than desired may indicate a problem in the circuit. Any issue here will need to be determined by tracing the particular wire you are diagnosing.

How Severe is This DTC?

I would say rather severe. In the field, we call a lack of fuel in the burned mixture a “lean” condition. When your engine is idling, you risk causing extreme damage to the engine in the short and long term. With this in mind, always follow your engine maintenance. There must be some diligence here, so let’s keep our engines running smoothly and efficiently. After all, they carry our weight to transport us daily.

What Are Some Symptoms of the Code?

Symptoms of a P216B fault code may include:

• Irregular engine performance
• Misfire
• Reduced fuel economy
• Irregular idle
• Excessive smoke
• Engine noise(s)
• Lack of power
• Inability to climb steep hills
• Reduced throttle response

What Are Some Common Causes of the Code?

Causes of this P216B fuel injector group supply voltage code may include:

• Faulty or damaged fuel injector(s)
• Damaged wiring harness
• Internal wiring malfunction
• Internal ECM problem
• Connector issue

What Are the P216B Troubleshooting Steps?

Basic Step #1

The first recommended step is to locate the “group” of sensors that the manufacturer refers to. With this information, you can then find the physical location of the injector(s) and their circuits. This may involve removing many covers and/or engine components to visually access them (if possible). Be sure to inspect the harness for frayed wires. Any worn insulation should be properly repaired with a shrink tube to prevent further and/or future issues.

Basic Step #2

Sometimes water and/or fluids can be “trapped” in the valleys where the injectors are installed. This increases the chances of the sensor connectors, among other electrical connections, corroding at a faster rate than normal. Ensure everything is as expected and that the connector tabs seal the connection properly. Feel free to use an electrical contact cleaner to make everything connect and disconnect smoothly, not to mention the increased electrical connectivity in the connections with the use of this product.

Basic Step #3

Check the circuit integrity by following the troubleshooting steps provided by your specific vehicle’s maintenance manual. An example is to disconnect the supply voltage circuit from the ECM and the fuel injector, then using your multimeter, determine whether the wires are in good working condition or not.

A test I like to do to quickly determine if there is an open in a particular wire that would help with the P216B code is to perform a “continuity test.” Set your multimeter to RESISTANCE (aka ohm, impedance, etc.), touch one end to one end of the circuit and the other end to the other end. Any value higher than desired may indicate a problem in the circuit. Any issue here will need to be determined by tracing the particular wire you are diagnosing.

How severe is this DTC?

I would say rather severe. In the field, we call a lack of fuel in the burned mixture a “lean” condition. When your engine is idling, you risk causing extreme damage to the engine in the short and long term. With this in mind, always follow your engine maintenance. There must be some diligence here, so let’s keep our engines running smoothly and efficiently. After all, they pull our weight to transport us daily.

What are some of the symptoms of the code?

Symptoms of a P216C fault code may include:

• Irregular engine performance
• Misfire
• Reduced fuel economy
• Irregular idle
• Excessive smoke
• Engine noise(s)
• Lack of power
• Unable to climb steep hills
• Reduced throttle response

What are some common causes of the code?

Causes of this P216C fuel injector group supply voltage code may include:

• Faulty or damaged fuel injector(s)
• Damaged wiring harness
• Internal wiring malfunction
• Internal ECM issue
• Connector problem

What are the troubleshooting steps for P216C?

Basic Step #1

The first recommended step is to locate the “group” of sensors that the manufacturer refers to. With this information, you can then find the physical location of the injector(s) and their circuits. This may involve removing many covers and/or engine components to visually access (if possible). Be sure to inspect the harness for short circuits to other power wires. Any worn insulation should be properly repaired with a shrink tube to avoid further and/or future issues.

Basic Step #2

Sometimes water and/or fluids can be “trapped” in the valleys where the injectors are installed. This increases the chances of the sensor connectors, among other electrical connections, corroding at a faster rate than normal. Make sure everything is as expected and that the connector tabs seal the connection properly. Feel free to use an electrical contact cleaner to ensure everything connects and disconnects smoothly, not to mention the increased electrical connectivity in the connections with the use of this product.

Basic Step #3

Check the circuit integrity by following the troubleshooting steps provided by your specific vehicle’s maintenance manual. An example is to disconnect the supply voltage circuit from the ECM and the fuel injector, then using your multimeter, determine whether the wires are in good working condition or not.

A test I like to do to quickly determine if there is an open in a particular wire that would help with the P216C code is to perform a “continuity test.” Set your multimeter to RESISTANCE (aka ohm, impedance, etc.), touch one end to one end of the circuit and the other end to the other end. Any value higher than desired may indicate a problem in the circuit. Any issue here will need to be determined by tracing the particular wire you are diagnosing.

How severe is this DTC?

I would say rather severe. In the field, we call a lack of fuel in the burned mixture a “lean” condition. When your engine is idling, you risk causing extreme damage to the engine in the short and long term. With this in mind, always follow your engine maintenance. There must be some diligence here, so let’s keep our engines running smoothly and efficiently. After all, they pull our weight to transport us daily.

What are some of the symptoms of the code?

Symptoms of a P216D fault code may include:

• Irregular engine performance
• Misfire
• Reduced fuel economy
• Irregular idle
• Excessive smoke
• Engine noise(s)
• Lack of power
• Unable to climb steep hills
• Reduced throttle response

What are some common causes of the code?

Causes of this P216D fuel injector group supply voltage code may include:

• Faulty or damaged fuel injector(s)
• Damaged wiring harness
• Internal wiring malfunction
• Internal ECM issue
• Connector problem

What are the troubleshooting steps for P216D?

Basic Step #1

The first recommended step is to locate the “group” of sensors that the manufacturer refers to. With this information, you can then find the physical location of the injector(s) and their circuits. This may involve removing many covers and/or engine components to visually access (if possible). Be sure to inspect the wiring harness for broken wires. Any worn insulation should be properly repaired with a shrink tube to avoid further and/or future issues.

Basic Step #2

Sometimes water and/or fluids can be “trapped” in the valleys where the injectors are installed. This increases the chances of the sensor connectors, among other electrical connections, corroding at a faster rate than normal. Ensure everything is as expected and that the connector tabs seal the connection properly. Feel free to use an electrical contact cleaner to make everything connect and disconnect smoothly, not to mention the increased electrical connectivity in the connections with the use of this product.

Basic Step #3

Check the circuit integrity by following the troubleshooting steps provided by your specific vehicle’s service manual. An example is to disconnect the supply voltage circuit from the ECM and the fuel injector, then using your multimeter, determine whether the wires are in good working condition or not.

A test I like to do to quickly determine if there is an open in a particular wire that would help with the P216D code is to perform a “continuity test.” Set your multimeter to RESISTANCE (aka ohm, impedance, etc.), touch one end to one end of the circuit and the other end to the other end. Any value higher than desired may indicate a problem in the circuit. Any issue here will need to be determined by tracing the particular wire you are diagnosing.

How severe is this DTC?

I would say rather severe. In the field, we call a lack of fuel in the burned mixture a “lean” condition. When your engine is idling, you risk causing extreme damage to the engine in the short and long term. With this in mind, always follow your engine maintenance. There must be some diligence here, so let’s keep our engines running smoothly and efficiently. After all, they pull our weight to transport us daily.

What are some of the symptoms of the code?

Symptoms of a P216E fault code may include:

• Irregular engine performance
• Misfire
• Reduced fuel economy
• Irregular idle
• Excessive smoke
• Engine noise(s)
• Lack of power
• Unable to climb steep hills
• Reduced throttle response

What are some common causes of the code?

Causes of this P216E fuel injector group supply voltage code may include:

• Faulty or damaged fuel injector(s)
• Damaged wiring harness
• Internal wiring malfunction
• Internal ECM issue
• Connector problem

What are the troubleshooting steps for P216E?

Basic Step #1

The first recommended step is to locate the “group” of sensors that the manufacturer refers to. With this information, you can then find the physical location of the injector(s) and their circuits. This may involve removing many covers and/or engine components to visually access (if possible). Be sure to inspect the harness for frayed wires. Any worn insulation should be properly repaired with a shrink tube to avoid further and/or future issues.

Basic Step #2

Sometimes water and/or fluids can be “trapped” in the valleys where the injectors are installed. This increases the chances of the sensor connectors, among other electrical connections, corroding at a faster rate than normal. Ensure everything is as expected and that the connector tabs seal the connection properly. Feel free to use an electrical contact cleaner to make everything connect and disconnect smoothly, not to mention the increased electrical connectivity in the connections with the use of this product.

Basic Step #3

Check the circuit integrity by following the troubleshooting steps provided by your specific vehicle’s maintenance manual. An example is to disconnect the supply voltage circuit from the ECM and the fuel injector, then using your multimeter, determine whether the wires are in good working condition or not.

A test I like to do to quickly determine if there is an open in a particular wire that would help with the P216E code is to perform a “continuity test.” Set your multimeter to RESISTANCE (aka ohm, impedance, etc.), touch one end to one end of the circuit and the other end to the other end. Any value higher than desired may indicate a problem in the circuit. Any issue here will need to be determined by tracing the particular wire you are diagnosing.

How severe is this DTC?

I would say rather severe. In the field, we call a lack of fuel in the burned mixture a “lean” condition. When your engine is idling, you risk causing extreme damage to the engine in the short and long term. With this in mind, always follow your engine maintenance. There must be some diligence here, so let’s keep our engines running smoothly and efficiently. After all, they pull our weight to transport us daily.

What are some of the symptoms of the code?

Symptoms of a P216F fault code may include:

• Irregular engine performance
• Misfire
• Reduced fuel economy
• Irregular idle
• Excessive smoke
• Engine noise(s)
• Lack of power
• Unable to climb steep hills
• Reduced throttle response

What are some common causes of the code?

Causes of this P216F fuel injector group supply voltage code may include:

• Faulty or damaged fuel injector(s)
• Damaged wiring harness
• Internal wiring malfunction
• Internal ECM issue
• Connector problem

What are the troubleshooting steps for P216F?

Basic Step #1

The first recommended step is to locate the “group” of sensors that the manufacturer refers to. With this information, you can then find the physical location of the injector(s) and their circuits. This may involve removing many covers and/or engine components to visually access them (if possible). Be sure to inspect the harness for short circuits to other power wires. Any worn insulation should be properly repaired with a shrink tube to avoid further issues and/or future problems.

Basic Step #2

Sometimes, water and/or fluids can be “trapped” in the valleys where the injectors are installed. This increases the chances of the sensor connectors, among other electrical connections, corroding at a faster rate than normal. Ensure everything is as expected and that the connector tabs seal the connection properly. Feel free to use an electrical contact cleaner to make everything connect and disconnect smoothly, not to mention the increased electrical connectivity in the connections with the use of this product.

Basic Step #3

Check the circuit integrity by following the troubleshooting steps provided by your specific vehicle’s maintenance manual. An example is to disconnect the supply voltage circuit from the ECM and the fuel injector, then using your multimeter, determine if the wires are in good working condition or not.

A test I like to do to quickly determine if there is an open in a particular wire that would help with the P216F code is to perform a “continuity test.” Set your multimeter to RESISTANCE (aka ohm, impedance, etc.), touch one end to one end of the circuit and the other end to the other end. Any value higher than desired may indicate a problem in the circuit. Any issue here will need to be determined by tracing the particular wire you are diagnosing.

P2170 Possible Causes

• Faulty exhaust pressure regulator vent solenoid
• Exhaust pressure regulator vent solenoid harness is open or shorted
• Poor electrical connection in exhaust pressure regulator solenoid circuit

What Does It Mean?

How to Fix Code P2170

Check the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P2170 Meaning

Exhaust pressure regulator vent solenoid control circuit is the generic description for code P2170, but the manufacturer may have a different description.