P1E20 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 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 Description
What are the Possible Causes of the DTC P1E20?
- 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?
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 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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Information for Specific Makes
- P1E20 Buick — Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage
- P1E20 Cadillac — Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage
- P1E20 Chevrolet — Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage
- P1E20 GMC — Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage
- P1E20 Saturn — Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage
Frequently Asked Questions about P1E20 Code
1. What does the OBDII code P1E20 mean?
P1E20 indicates a low voltage issue in the Auxiliary Transmission Fluid Pump Control Module's Hybrid/EV Battery Voltage Sense Circuit.
2. What are the common symptoms of code P1E20?
Symptoms may include warning lights on the dashboard, reduced hybrid or EV performance, and abnormal transmission behavior.
3. What causes code P1E20 to appear?
Common causes include a faulty auxiliary transmission fluid pump control module, damaged wiring, corroded connectors, or a low voltage condition in the hybrid/EV battery.
4. Can I drive my vehicle with a P1E20 code?
Driving with this code is not recommended, as it can lead to reduced performance and potential damage to the transmission or hybrid/EV system.
5. How is the P1E20 code diagnosed?
Diagnosis involves using a scan tool to confirm the code, inspecting the wiring and connectors for damage or corrosion, and testing the voltage of the hybrid/EV battery.
6. How do I fix the P1E20 code?
Repairs may include replacing the auxiliary transmission fluid pump control module, repairing damaged wiring, or addressing issues with the hybrid/EV battery.
7. What tools are needed to troubleshoot a P1E20 code?
A diagnostic scan tool, multimeter, and access to the vehicle’s wiring diagrams are typically required for troubleshooting.
8. What is the role of the auxiliary transmission fluid pump control module?
This module ensures proper transmission fluid flow, which is critical for efficient operation in hybrid and EV systems.
9. Can a low hybrid/EV battery cause the P1E20 code?
Yes, a low or malfunctioning hybrid/EV battery can contribute to triggering this code.
10. Is P1E20 a manufacturer-specific code?
Yes, P1E20 is a manufacturer-specific code, and its meaning may vary slightly depending on the vehicle make and model.
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