P1E20 GMC Code - Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage
Quick Answer
The power inverter module, 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
- P1E20 GMC indicates Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage.
- 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.
Code P1E20 GMC Description
What are the Possible Causes of the DTC P1E20 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 P1E20 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 P1E20 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.
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Frequently Asked Questions about P1E20 GMC Code
What does the OBDII code P1E20 mean for GMC vehicles?
The P1E20 code indicates a low voltage condition detected in the auxiliary transmission fluid pump control module, specifically relating to the hybrid or electric vehicle's battery voltage sense circuit.
What are the common symptoms of the P1E20 code?
Common symptoms may include warning lights on the dashboard, reduced engine performance, and potential overheating of the transmission due to inadequate fluid circulation.
What can cause the P1E20 code to trigger?
Causes may include a faulty auxiliary transmission fluid pump, poor electrical connections, damaged wiring harnesses, or issues with the hybrid/EV battery itself.
How can I diagnose the P1E20 code?
To diagnose the P1E20 code, start by visually inspecting the wiring and connections related to the auxiliary transmission fluid pump. Use a multimeter to check for voltage and continuity, and scan for other related codes.
What are some potential fixes for the P1E20 code?
Potential fixes include repairing or replacing damaged wiring, fixing corroded connectors, replacing the auxiliary transmission fluid pump, or addressing issues with the hybrid/EV battery.
Is it safe to drive a vehicle with a P1E20 code?
While it may still be drivable, it's not advisable to drive for extended periods as it could lead to transmission overheating and more severe damage.
Should I reset the code after repairs?
Yes, after performing repairs, you should clear the code using an OBDII scanner and then perform a test drive to ensure the issue has been resolved and the code does not return.
Can I fix the P1E20 code myself?
If you have experience with automotive electrical systems and troubleshooting, you may be able to diagnose and fix the issue. Otherwise, it’s recommended to consult a professional mechanic.
How does the auxiliary transmission fluid pump affect vehicle performance?
The auxiliary transmission fluid pump helps maintain proper fluid pressure and temperature, which is crucial for optimal transmission performance. If it's not functioning correctly, it can lead to poor shifting and potential transmission failure.
What is the cost of repairing the P1E20 code?
Repair costs can vary widely based on the underlying issue, ranging from a simple wiring repair to replacing the auxiliary transmission fluid pump, which may cost several hundred dollars. Always get a detailed estimate from a mechanic.
Discuss the causes and fixes for P1E20 GMC OBDII Code
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