How severe is this DTC?

The severity of this code typically starts as moderate but can quickly escalate to a more severe level when not corrected promptly.

What are some of the symptoms of the code?

Symptoms of a P2732 trouble code may include:

• Vehicle enters limp mode
• Transmission slips when shifting gears
• Transmission overheating
• Transmission shifts roughly
• Reduced fuel economy
• Symptoms that may resemble misfires
• Check engine light illuminated

What are some common causes of the code?

Causes of this P2732 transmission code may include:

• Faulty pressure control solenoid
• Dirty or contaminated fluid
• Dirty or clogged transmission filter
• Faulty transmission pump
• Faulty transmission valve body
• Restricted hydraulic passages
• Corroded or damaged connector
• Faulty or damaged wiring
• Faulty PCM

What are the troubleshooting steps for P2732?

Before starting the troubleshooting process for any malfunction, you should research technical service bulletins (TSBs) for the specific vehicle by year, model, and transmission. In some circumstances, this can save you significant time in the long run by pointing you in the right direction. You should also check vehicle records to verify when the filter and fluid were last changed if possible.

Fluid and wiring inspections

The first step is to check the fluid level and examine the condition of the fluid for contamination. Before changing the fluid, you should check vehicle records to verify when the filter and fluid were last changed.

A detailed visual inspection to check the condition of the wiring for obvious defects comes next. Check connectors and connections for security, corrosion, and damaged pins. This should include all wiring and connectors for the transmission pressure control solenoids, transmission pump, and PCM. Depending on the configuration, the transmission pump may be electric or mechanical.

Advanced steps

Advanced steps always become very vehicle-specific and require appropriate advanced equipment to operate accurately. These procedures require a digital multimeter and vehicle-specific technical references. You should obtain troubleshooting guidelines specific to your vehicle before proceeding with advanced steps. Voltage requirements can be very specific to the particular vehicle model. Fluid pressure requirements will also vary depending on transmission design and configuration.

Continuity checks

Unless otherwise indicated in the technical data, normal readings for wiring and connections should be 0 ohms of resistance. Continuity checks should always be performed with power disconnected from the circuit to avoid short-circuiting and causing further damage. Resistance or lack of continuity indicates faulty wiring that is open or shorted and should be repaired or replaced.

What are the common repairs for this code?

• Replacing fluid and filter
• Replacing faulty pressure control solenoid
• Repairing or replacing faulty transmission pump
• Repairing or replacing faulty transmission valve body
• Flushing transmission to clean passages
• Cleaning corrosion from connectors
• Repairing or replacing wiring
• Flashing or replacing PCM

Possible misdiagnosis may include:

• Engine misfire issue
• Transmission pump problem
• Internal transmission problem
• Transmission problem

Hopefully, the information in this article has been helpful in pointing you in the right direction to correct the issue with your pressure control solenoid trouble code. This article is strictly informational, and technical data and service bulletins specific to your vehicle should always take priority.

How severe is this DTC?

The severity of this code typically starts as moderate but can quickly escalate to a more severe level if not addressed promptly. In situations causing transmission clunking in the pinion, permanent internal damage may occur, making the issue serious.

What are some symptoms of the code?

Symptoms of a P2739 fault code may include:

• Increased fuel consumption
• Check engine light activated
• Transmission overheating
• Transmission slipping during gear shifts
• Hard shifting (gear clunking)
• Symptoms resembling misfires
• Transmission put into limp mode by the PCM

What are some common causes of the code?

Causes of this P2739 transmission code may include:

• Faulty pressure control solenoid
• Contaminated transmission fluid
• Restricted transmission filter
• Defective transmission pump
• Faulty transmission valve body
• Blocked hydraulic passages
• Corroded or damaged connector
• Faulty or damaged wiring
• Defective PCM

What are the troubleshooting steps for P2739?

Before starting the troubleshooting process for any malfunction, you should research technical service bulletins (TSBs) for the specific vehicle by year, model, and transmission. In some cases, this can save significant time by pointing you in the right direction.

Fluid and wiring inspections

The first step is to check the fluid level and examine the fluid condition for contamination. Before changing the fluid, you should (if possible) check the vehicle records to verify when the filter and fluid were last changed.

A detailed visual inspection to check the wiring condition for obvious defects follows. Check connectors and connections for security, corrosion, and damaged pins. This should include all wiring and connectors for the transmission pressure control solenoids, transmission pump, and PCM. Depending on the specific configuration, the transmission pump may be electrically or mechanically driven.

Advanced steps

Advanced steps always become very vehicle-specific and require appropriate advanced equipment to perform accurately. These procedures require a digital multimeter and vehicle-specific technical references. You should always obtain troubleshooting data specific to your vehicle before proceeding with advanced steps. Voltage requirements vary depending on the specific vehicle model. Fluid pressure requirements may also vary based on transmission design and configuration.

Continuity checks

Unless otherwise indicated in the technical data, normal readings for wiring and connections should be 0 ohms resistance. Continuity checks should always be performed with power disconnected from the circuit to avoid short-circuiting and causing further damage. Resistance or lack of continuity indicates faulty wiring that is open or shorted and should be repaired or replaced.

What are the common repairs for this code?

• Replacing fluid and filter
• Replacing faulty pressure control solenoid
• Repairing or replacing defective transmission pump
• Repairing or replacing faulty transmission valve body
• Flushing transmission to clean passages
• Cleaning connector corrosion
• Repairing or replacing faulty wiring
• Flashing or replacing defective PCM

Possible misdiagnosis may include:

• Engine misfire issue
• Transmission pump malfunction
• Internal transmission problem
• Transmission issue

Hopefully, the information in this article will help you resolve the issue with your P2739 pressure control solenoid diagnostic trouble codes. This article is strictly for informational purposes, and the technical data and service bulletins specific to your vehicle will always take precedence.

How severe is this DTC?

The severity of this code typically starts as moderate but can quickly escalate to a more severe level if not corrected promptly. In situations that cause transmission clunking in the pinion, permanent internal damage may occur, making the issue serious.

What are some symptoms of the code?

Symptoms of a P2738 fault code may include:

• Increased fuel consumption
• Engine light activated
• Transmission overheating
• Transmission slipping during gear shifts
• Transmission shifting hard (gear clunking)
• Symptoms that may resemble misfires
• Transmission put into limp mode by the PCM

What are some common causes of the code?

Causes of this P2738 transmission code may include:

• Faulty pressure control solenoid
• Contaminated transmission fluid
• Restricted transmission filter
• Faulty transmission pump
• Faulty transmission valve body
• Blocked hydraulic passages
• Corroded or damaged connector
• Faulty or damaged wiring
• Faulty PCM

What are the troubleshooting steps for P2738?

Before starting the troubleshooting process for any malfunction, you should research technical service bulletins (TSBs) for the specific vehicle by year, model, and transmission. In some cases, this can save significant time in the long run by pointing you in the right direction.

Fluid and wiring inspections

The first step is to check the fluid level and examine the fluid condition for contamination. Before changing the fluid, you should (if possible) check the vehicle records to verify when the filter and fluid were last changed.

A detailed visual inspection to check the wiring condition for obvious defects follows. Check connectors and connections for security, corrosion, and damaged pins. This should include all wiring and connectors for the transmission pressure control solenoids, transmission pump, and PCM. Depending on the specific configuration, the transmission pump may be electrically or mechanically driven.

Advanced steps

Advanced steps always become very vehicle-specific and require appropriate advanced equipment to operate accurately. These procedures require a digital multimeter and vehicle-specific technical references. You should always obtain troubleshooting data specific to your vehicle before proceeding with advanced steps. Voltage requirements vary depending on the specific vehicle model. Fluid pressure requirements may also vary based on transmission design and configuration.

Continuity checks

Unless otherwise indicated in the technical data, normal readings for wiring and connections should be 0 ohms resistance. Continuity checks should always be performed with power disconnected from the circuit to avoid short-circuiting and causing further damage. Resistance or lack of continuity indicates faulty wiring that is open or shorted and should be repaired or replaced.

What are the common repairs for this code?

• Replacing fluid and filter
• Replacing faulty pressure control solenoid
• Repairing or replacing faulty transmission pump
• Repairing or replacing faulty transmission valve body
• Flushing transmission to clean passages
• Cleaning corrosion from connectors
• Repairing or replacing faulty wiring
• Flashing or replacing faulty PCM

Possible misdiagnosis may include:

• Engine misfire issue
• Transmission pump malfunction
• Internal transmission problem
• Transmission issue

Hopefully, the information in this article will help you resolve the issue with your P2738 pressure control solenoid diagnostic trouble codes. This article is strictly for informational purposes, and the technical data and service bulletins specific to your vehicle will always take precedence.

Code Severity and Symptoms

The severity of this code is moderate to severe. In some cases, this code may indicate a transmission problem. It’s a good idea to address this code as soon as possible.

Symptoms of a P2741 engine code may include:

• Check engine light
• Poor torque converter clutch operation
• Hard or delayed shifts
• Vehicle stuck in limp mode

Causes

Causes of this fault code may include:

• Faulty transmission fluid temperature sensor
• Transmission problems
• Wiring issues
• Faulty PCM

Diagnostic and Repair Procedures

Start by visually inspecting the transmission fluid temperature sensor and its corresponding wiring. Look for loose connections, damaged wiring, etc. If damage is detected, repair as needed, clear the code, and see if it returns. Then, check technical service bulletins (TSBs) regarding the issue. If nothing is found, you’ll need to proceed with step-by-step system diagnosis.

The following is a generalized procedure, as tests for this code vary by vehicle. To accurately test the system, you’ll need to refer to the manufacturer’s diagnostic flowchart.

Perform Preliminary Circuit Tests

Use a scan tool to monitor the transmission temperature sensor data parameter. Disconnect the TFT sensor; the scan tool value should drop to a very low value. Then, connect a jumper between the terminals. If the scan tool now displays a very high temperature, the connections are solid and the ECM can recognize the input. This means the problem most likely lies with the sensor rather than a circuit or PCM issue.

Test the Sensor

Disconnect the transmission fluid temperature sensor connector. Then, measure the resistance between the two sensor terminals using a digital multimeter set to ohms. Start the engine and watch the meter value; the values should decrease smoothly as the engine warms up (check the engine temperature gauge on the dashboard to ensure the engine reaches operating temperature). If the engine temperature increases but the TFT resistance does not decrease, the sensor is faulty and needs to be replaced.

Check the Circuit

Check the reference voltage side of the circuit: ignition on, use a digital multimeter set to volts to check for a 5-volt reference from the PCM to one of the two transmission fluid temperature sensor terminals. If no reference signal is present, set the meter to ohms (ignition off) between the reference voltage pin on the TFT and the reference voltage pin on the PCM. If the meter reads out of limits (OL), there is an open circuit between the PCM and the sensor that will need to be located and repaired. If the meter reads a numerical value, there is continuity.

If everything is fine up to this point, you’ll want to verify that there are 5 volts coming from the PCM at the reference voltage terminal. If there is no 5-volt reference from the PCM, the PCM is likely faulty.

Check the Ground Side of the Circuit

Connect the meter set to ohms (ignition off) between the ground terminal of the transmission fluid temperature sensor and the ground terminal of the PCM. If the meter reads out of limits (OL), there is an open circuit between the PCM and the sensor that will need to be located and repaired. If the meter reads a numerical value, there is continuity. Finally, verify that the PCM has a good ground by attaching one meter lead to the PCM ground terminal and the other to chassis ground. Again, if the meter reads out of limits (OL), there is an open circuit between the PCM and ground that will need to be located and repaired.

If everything in the circuit checks out, there may be a problem with the transmission. This is especially true if transmission fluid temperature codes are set along with other transmission codes.

Code Severity and Symptoms

The severity of this code is moderate to severe. In some cases, this code may indicate a transmission problem. It’s a good idea to address this code as soon as possible.

Symptoms of a P2740 engine code may include:

• Check engine light
• Poor torque converter clutch operation
• Hard or delayed shifts
• Vehicle stuck in limp mode

Causes

Causes of this fault code may include:

• Faulty transmission fluid temperature sensor
• Transmission problems
• Wiring issues
• Faulty PCM

Diagnostic and Repair Procedures

Start by visually inspecting the transmission fluid temperature sensor and its corresponding wiring. Look for loose connections, damaged wiring, etc. If damage is detected, repair as needed, clear the code, and see if it returns. Then, check technical service bulletins (TSBs) regarding the issue. If nothing is found, you’ll need to proceed with step-by-step system diagnosis.

The following is a generalized procedure, as tests for this code vary by vehicle. To accurately test the system, you’ll need to refer to the manufacturer’s diagnostic flowchart.

Perform Preliminary Circuit Tests

Use a scan tool to monitor the transmission temperature sensor data parameter. Disconnect the TFT sensor; the scan tool value should drop to a very low value. Then, connect a jumper between the terminals. If the scan tool now displays a very high temperature, the connections are solid and the ECM can recognize the input. This means the problem most likely lies with the sensor and not a circuit or PCM issue.

Test the Sensor

Disconnect the transmission fluid temperature sensor connector. Then, measure the resistance between the two sensor terminals using a digital multimeter set to ohms. Start the engine and watch the meter value; the values should decrease smoothly as the engine warms up (check the engine temperature gauge on the dashboard to ensure the engine reaches operating temperature). If the engine temperature increases but the TFT resistance does not decrease, the sensor is faulty and needs to be replaced.

Check the Circuit

Check the reference voltage side of the circuit: ignition on, use a digital multimeter set to volts to check for a 5-volt reference from the PCM to one of the two transmission fluid temperature sensor terminals. If no reference signal is present, connect the meter to ohms (ignition off) between the reference voltage pin on the TFT and the reference voltage pin on the PCM. If the meter reads out of limits (OL), there is an open circuit between the PCM and the sensor that will need to be located and repaired. If the meter reads a numerical value, there is continuity.

If everything is okay up to this point, you’ll want to verify that there are 5 volts coming from the PCM at the reference voltage terminal. If there is no 5-volt reference from the PCM, the PCM is likely faulty.

Check the Ground Side of the Circuit

Connect the meter set to ohms (ignition off) between the ground terminal of the transmission fluid temperature sensor and the ground terminal of the PCM. If the meter reads out of limits (OL), there is an open circuit between the PCM and the sensor that will need to be located and repaired. If the meter reads a numerical value, there is continuity. Finally, verify that the PCM has a good ground by attaching one meter lead to the PCM’s ground terminal and the other to chassis ground. Again, if the meter reads out of limits (OL), there is an open circuit between the PCM and ground that will need to be located and repaired.

If everything in the circuit checks out, there may be a problem with the transmission. This is especially true if transmission fluid temperature codes are set along with other transmission codes.

How severe is this DTC?

I would say this fault is moderately severe. As mentioned earlier, your automatic transmission may still function properly. That said, it could also indicate one or more larger and more urgent issues. Diagnosing any transmission problem as soon as possible is the best strategy.

What are some symptoms of the code?

Symptoms of a P2749 trouble code may include:

• Hard shifting
• Multiple dashboard warning lights on
• Poor driving performance
• Irregular engine RPM

What are some common causes of the code?

Causes

of this P2749 engine code may include:

• Faulty or damaged intermediate shaft speed sensor
• Electrical fault in the wiring between the speed sensor and the modules used
• Internal ECM and/or TCM issue
• Other related sensors/solenoids damaged or faulty (e.g., input shaft speed sensor, output shaft sensor, shift solenoid, etc.)
• Dirty or low automatic transmission fluid (ATF)

What are the troubleshooting steps for P2749?

Basic Step #1

If you’re looking up this code, I’ll assume you’ve already checked the transmission fluid level. If not, start with that. Make sure the fluid is clean and properly filled. Once the fluid is all set, you need to locate the intermediate shaft speed sensor. Often, these sensors are mounted directly on the transmission case.

You might even access the sensor under the hood; this may involve removing one or more components such as the air filter and box, various brackets, wires, etc., to reach it. Ensure the sensor and its corresponding connector are in good condition and fully connected.

TIP: Burnt-smelling ATF (automatic transmission fluid) is a sign that new fluid is needed, so don’t hesitate to perform a full transmission service with all new filters, gaskets, and fluid.

Basic Step #2

An easily accessible speed sensor should be removed and cleaned. This costs almost nothing, and if you find the sensor tip excessively dirty once removed, you might be able to clean your problems away, literally. Use brake cleaner and a cloth to ensure a clean pickup on the sensor. Dirt and/or debris here can affect sensor readings, so make sure yours is clean!

NOTE: Any signs of rubbing on the sensor may indicate improper spacing between the reluctor ring and the sensor. Most likely, the sensor has malfunctioned and is now hitting the ring. If a replacement sensor still doesn’t clear the code, refer to the manufacturer’s procedures to adjust the gap between the sensor and the reluctor.

Basic Step #3

Test the sensor and its circuit. To test the sensor itself, you’ll need to use your multimeter and the manufacturer’s specific specifications to measure different electrical values between the sensor pins. A good tip is to perform these tests from the same wires but at the corresponding ECM or TCM connector pins. This will check the integrity of the involved harness as well as the sensor.

How Severe Is This DTC?

I would say this fault is moderately severe. As mentioned earlier, your automatic transmission may still function correctly. That said, it could also be indicative of one or more larger and more urgent issues. Diagnosing any transmission problem as soon as possible is the best strategy.

What Are Some Symptoms of the Code?

Symptoms of a P2748 trouble code may include:

• Hard shifting
• Multiple dashboard warning lights on
• Poor driving performance
• Irregular engine RPM

What Are Some Common Causes of the Code?

Causes of this P2748 engine code may include:

• Faulty or damaged intermediate shaft speed sensor
• Electrical fault in the wiring between the speed sensor and the modules used
• Internal ECM and/or TCM issue
• Other related sensors/solenoids damaged or faulty (e.g., input shaft speed sensor, output shaft sensor, shift solenoid, etc.)
• Dirty or low automatic transmission fluid (ATF)

What Are the Troubleshooting Steps for P2748?

Basic Step #1

If you’re looking up this code, I’ll assume you’ve already checked the transmission fluid level. If not, start with that. Make sure the fluid is clean and properly filled. Once the fluid is all set, you need to locate the intermediate shaft speed sensor. Often, these sensors are mounted directly on the transmission case.

You may even access the sensor under the hood, which might involve removing one or more components such as the air filter and box, various brackets, wires, etc., to reach it. Ensure the sensor and its corresponding connector are in good condition and fully connected.

TIP: Burnt-smelling ATF (automatic transmission fluid) is a sign that new fluid is needed, so don’t hesitate to perform a full transmission service with all new filters, gaskets, and fluid.

Basic Step #2

An easily accessible speed sensor should be removed and cleaned. This costs almost nothing, and if you find the sensor tip is excessively dirty once removed, you might be able to clean away your problems, literally. Use brake cleaner and a cloth to ensure a clean pickup on the sensor. Dirt and/or debris here can interfere with sensor readings, so make sure yours is clean!

NOTE: Any signs of rubbing on the sensor may indicate improper spacing between the reluctor ring and the sensor. Most likely, the sensor has malfunctioned and is now hitting the ring. If a replacement sensor still doesn’t clear the code, refer to the manufacturer’s procedures to adjust the gap between the sensor and the reluctor.

Basic Step #3

Test the sensor and its circuit. To test the sensor itself, you’ll need to use your multimeter and the manufacturer’s specific specifications to measure different electrical values between the sensor pins. A good tip is to perform these tests from the same wires but at the corresponding ECM or TCM connector pins. This will check the integrity of the involved harness as well as the sensor.

How severe is this DTC?

I would say this fault is moderately severe. As mentioned earlier, your automatic transmission may still function correctly. That said, it could also be indicative of one or more larger and more urgent issues. Diagnosing any transmission problem as soon as possible is the best strategy.

What are some symptoms of the code?

Symptoms of a P2747 trouble code may include:

• Hard shifting
• Multiple dashboard warning lights on
• Poor driving performance
• Irregular engine RPM

What are some common causes of the code?

Causes

of this P2747 engine code may include:

• Faulty or damaged intermediate shaft speed sensor
• Electrical fault in the wiring between the speed sensor and the modules used
• Internal ECM and/or TCM problem
• Other related sensors/solenoids damaged or faulty (e.g., input shaft speed sensor, output shaft sensor, shift solenoid, etc.)
• Dirty or low automatic transmission fluid (ATF)

What are the troubleshooting steps for P2747?

Basic Step #1

If you’re looking up this code, I’ll assume you’ve already checked the transmission fluid level. If not, start with that. Make sure the fluid is clean and properly filled. Once the fluid is all set, you need to locate the intermediate shaft speed sensor. Often, these sensors are mounted directly on the transmission case.

You might even access the sensor under the hood; this may involve removing one or more components such as the air filter and box, various brackets, wires, etc., to reach it. Ensure the sensor and its corresponding connector are in good condition and fully connected.

TIP: Burnt-smelling ATF (automatic transmission fluid) is a sign that new fluid is needed, so don’t hesitate to perform a full transmission service with all new filters, gaskets, and fluid.

Basic Step #2

An easily accessible speed sensor should be removed and cleaned. This costs almost nothing, and if you find the sensor’s tip is excessively dirty once removed, you might be able to clean your problems away, literally. Use brake cleaner and a cloth to ensure a clean pickup for the sensor. Dirt and/or metal shavings here can interfere with sensor readings, so make sure yours is clean!

NOTE: Any signs of rubbing on the sensor may indicate improper spacing between the reluctor ring and the sensor. Most likely, the sensor has failed and is now hitting the ring. If a replacement sensor still doesn’t clear the code, refer to the manufacturer’s procedures to adjust the gap between the sensor and the reluctor.

Basic Step #3

Test the sensor and its circuit. To test the sensor itself, you’ll need to use your multimeter and the manufacturer’s specific specifications to measure different electrical values between the sensor’s pins. A good tip is to perform these tests from the same wires but at the corresponding ECM or TCM connector pins. This will check the integrity of the involved wiring harness as well as the sensor.

How Severe Is This DTC?

I would say this fault is moderately severe. As mentioned earlier, your automatic transmission may still function correctly. That said, it could also be indicative of one or more larger and more urgent issues. Diagnosing any transmission problem as soon as possible is the best strategy.

What Are Some Symptoms of the Code?

Symptoms of a P2746 trouble code may include:

• Hard shifting
• Multiple dashboard warning lights on
• Poor driving performance
• Irregular engine RPM

What Are Some Common Causes of the Code?

Causes

of this P2746 engine code may include:

• Faulty or damaged intermediate shaft speed sensor
• Electrical fault in the wiring between the speed sensor and the modules used
• Internal ECM and/or TCM issue
• Other related sensors/solenoids damaged or faulty (e.g., input shaft speed sensor, output shaft sensor, shift solenoid, etc.)
• Dirty or low automatic transmission fluid (ATF)

What Are the Troubleshooting Steps for P2746?

Basic Step #1

If you’re looking up this code, I’ll assume you’ve already checked the transmission fluid level. If not, start with that. Make sure the fluid is clean and properly filled. Once everything is fluid, you need to locate the intermediate shaft speed sensor. Often, these sensors are mounted directly on the transmission case.

You may even access the sensor under the hood; this might involve removing one or more components such as the air filter and box, various brackets, wires, etc., to reach it. Ensure the sensor and its corresponding connector are in good condition and fully connected.

TIP: Burnt-smelling ATF (automatic transmission fluid) is a sign that new fluid is needed, so don’t hesitate to perform a full transmission service with all new filters, gaskets, and fluid.

Basic Step #2

An easily accessible speed sensor should be removed and cleaned. This costs almost nothing, and if you find the sensor tip excessively dirty once removed, you might be able to clean your problems away, literally. Use brake cleaner and a cloth to ensure a clean pickup on the sensor. Dirt and/or debris here can affect sensor readings, so make sure yours is clean!

NOTE: Any signs of rubbing on the sensor may indicate improper spacing between the reluctor ring and the sensor. Most likely, the sensor has malfunctioned and is now hitting the ring. If a replacement sensor still doesn’t clear the code, refer to the manufacturer’s procedures to adjust the gap between the sensor and the reluctor.

Basic Step #3

Test the sensor and its circuit. To test the sensor itself, you’ll need to use your multimeter and the manufacturer’s specific specifications to measure different electrical values between the sensor pins. A good tip is to perform these tests from the same wires but at the corresponding ECM or TCM connector pins. This will check the integrity of the involved harness as well as the sensor.

How Severe Is This DTC?

I would say this fault is moderately severe. As mentioned earlier, your automatic transmission may still function properly. That said, it could also be indicative of one or more larger and more urgent issues. Diagnosing any transmission problem as soon as possible is the best strategy.

What Are Some Symptoms of the Code?

Symptoms of a P2745 trouble code may include:

• Hard shifting
• Multiple dashboard warning lights on
• Poor driving performance
• Irregular engine RPM

What Are Some Common Causes of the Code?

Causes

of this P2745 engine code may include:

• Faulty or damaged intermediate shaft speed sensor
• Electrical fault in the wiring between the speed sensor and the modules used
• Internal ECM and/or TCM issue
• Other related sensors/solenoids damaged or faulty (e.g., input shaft speed sensor, output shaft sensor, shift solenoid, etc.)
• Dirty or low automatic transmission fluid (ATF)

What Are the Troubleshooting Steps for P2745?

Basic Step #1

If you’re looking up this code, I’ll assume you’ve already checked the transmission fluid level. If not, start with that. Make sure the fluid is clean and properly filled. Once everything is fluid, you need to locate the intermediate shaft speed sensor. Often, these sensors are mounted directly on the transmission case.

You might even access the sensor under the hood; this may involve removing one or more components such as the air filter and box, various brackets, wires, etc., to reach it. Ensure the sensor and its corresponding connector are in good condition and fully connected.

TIP: Burnt-smelling ATF (automatic transmission fluid) is a sign that new fluid is needed, so don’t hesitate to perform a full transmission service with all new filters, gaskets, and fluid.

Basic Step #2

An easily accessible speed sensor should be removed and cleaned. This costs almost nothing, and if you find the sensor tip is excessively dirty once removed, you might be able to clean your problems away, literally. Use brake cleaner and a cloth to ensure a clean pickup on the sensor. Dirt and/or metal shavings here can affect sensor readings, so make sure yours is clean!

NOTE: Any signs of rubbing on the sensor may indicate improper spacing between the reluctor ring and the sensor. Most likely, the sensor has failed and is now hitting the ring. If a replacement sensor still doesn’t clear the code, refer to the manufacturer’s procedures to adjust the gap between the sensor and the reluctor.

Basic Step #3

Test the sensor and its circuit. To test the sensor itself, you’ll need to use your multimeter and the manufacturer’s specific specifications to measure different electrical values between the sensor pins. A good tip is to perform these tests from the same wires but at the corresponding ECM or TCM connector pins. This will check the integrity of the involved wiring harness as well as the sensor.