P1E20
Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage
P1E20 is an OBD-II diagnostic trouble code meaning: Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage. Common causes: open or short circuit in wiring harness, auxiliary pump control module malfunction. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- Switching to emergency mode
- Unusual noises from the transmission
- Reduced performance of the hybrid system
Causes
- Open or short circuit in wiring harness
- Auxiliary pump control module malfunction
- Problems with the hybrid system battery
- Poor contacts in electrical connections
- Voltage sensor fault
How to Fix
- Check the condition of the wiring harness and connections
- Check hybrid system battery voltage
- Test the auxiliary pump control module
- Replace faulty electrical circuit components
- Clean and tighten all electrical connections
Related codes
FAQ
What does the P1E20 code mean?
P1E20 is an OBD-II diagnostic trouble code that indicates: Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage
What causes a P1E20 error code?
The most common causes of P1E20 include: Open or short circuit in wiring harness; Auxiliary pump control module malfunction; Problems with the hybrid system battery; Poor contacts in electrical connections.
How do I fix a P1E20 diagnostic trouble code?
To fix P1E20: Check the condition of the wiring harness and connections. Check hybrid system battery voltage. Test the auxiliary pump control module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1E20?
Limited driving only, diagnose soon
How much does it cost to fix P1E20?
The estimated repair cost for P1E20 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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