P1FEF
Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Performance
P1FEF is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Performance. Common causes: module 7 voltage sensor malfunction, damage to the wiring harness to the sensor. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- Reducing electric range
- Incorrect battery level readings
- The vehicle goes into emergency mode
Causes
- Module 7 voltage sensor malfunction
- Damage to the wiring harness to the sensor
- Corrosion of contacts in connectors
- Problems with the Battery Interface Control Module
- Mechanical damage to the sensor
How to Fix
- Check the integrity of the wiring harness to the sensor
- Clean the contacts in the sensor connectors
- Check sensor readings using diagnostic equipment
- Replace faulty voltage sensor
- Test the system after repair
Related codes
FAQ
What does the P1FEF code mean?
P1FEF is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 7 Voltage Sensor Performance
What causes a P1FEF error code?
The most common causes of P1FEF include: Module 7 voltage sensor malfunction; Damage to the wiring harness to the sensor; Corrosion of contacts in connectors; Problems with the Battery Interface Control Module.
How do I fix a P1FEF diagnostic trouble code?
To fix P1FEF: Check the integrity of the wiring harness to the sensor. Clean the contacts in the sensor connectors. Check sensor readings using diagnostic equipment. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1FEF?
Limited driving only, diagnose soon
How much does it cost to fix P1FEF?
The estimated repair cost for P1FEF is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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