AutoCodes – GMC – P1E38 GMC

P1E38 GMC Code - Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit

Quick Answer

The power inverter motor, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Common causes include Program Power Inverter Module, Faulty Power Inverter Module, Power Inverter Module harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1E38 GMC indicates Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit.
Common causes: Common causes include Program Power Inverter Module, Faulty Power Inverter Module, Power Inverter Module harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 657

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E38 GMC Description

The power inverter motor, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Two of the motor control modules operate their respective drive motor generator based upon power inverter module commands. The third motor control module controls the auxiliary transmission fluid pump motor. The hybrid powertrain control module and the motor control modules share the power inverter module ignition voltage circuit, battery voltage circuits and chassis earth.

OBDII Code P1E38 GMC - Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit - AutoCodes.com — P1E38 GMC Code - Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit

What does this mean?

What are the Possible Causes of the DTC P1E38 GMC?

Program Power Inverter Module
Faulty Power Inverter Module
Power Inverter Module harness is open or shorted
Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1E38 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1E38 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1E38 GMC code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1E38 GMC Code

1. What are the common symptoms of OBDII code P1E38 GMC related to the Auxiliary Transmission Fluid Pump Inverter Supply Voltage Circuit?

The common symptoms include the transmission not shifting properly, erratic shifting behavior, and illuminated warning lights on the dashboard.

2. What could cause the OBDII code P1E38 GMC to be triggered?

The code P1E38 GMC is typically triggered by issues with the auxiliary transmission fluid pump inverter supply voltage circuit, such as a faulty pump inverter or damaged wiring.

3. How can I diagnose the problem related to the OBDII code P1E38 GMC?

Diagnosing the issue may involve using a scan tool to read the code and checking the wiring and connections related to the auxiliary transmission fluid pump inverter.

4. What are the possible repair options for fixing the OBDII code P1E38 GMC?

Repair options may include replacing the faulty auxiliary transmission fluid pump inverter, repairing damaged wiring or connections, and clearing the code from the vehicle's computer.

5. Can I continue driving my vehicle with the OBDII code P1E38 GMC present?

It is not recommended to drive the vehicle with the code P1E38 GMC present, as it can lead to further damage to the transmission system and potentially unsafe driving conditions.

6. How important is it to address the OBDII code P1E38 GMC promptly?

It is important to address the code promptly to prevent potential transmission damage and ensure the safe and reliable operation of the vehicle.

7. Are there any preventive maintenance measures to avoid the OBDII code P1E38 GMC?

Regularly inspecting the transmission system, keeping up with scheduled maintenance, and addressing any warning signs promptly can help prevent issues related to the code P1E38 GMC.

8. Is the repair for the OBDII code P1E38 GMC something I can do myself, or should I seek professional help?

The complexity of the repair for the code P1E38 GMC may vary, but it is recommended to seek professional help for proper diagnosis and repair to ensure the issue is resolved correctly.

9. How much can I expect to pay for repairing the OBDII code P1E38 GMC?

The cost of repairing the code P1E38 GMC can vary depending on the extent of the damage and the repair needed, so it is advisable to get a diagnosis and estimate from a qualified mechanic.

10. Will resetting the OBDII code P1E38 GMC on my own solve the underlying issue?

Resetting the code without addressing the underlying issue will not solve the problem, as the code is likely to reappear until the root cause is properly diagnosed and repaired.