P1FEC
Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance
P1FEC is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance. Common causes: faulty voltage sensor in the control module, poor electrical connection. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- Reduced performance of the hybrid system
- Incorrect display of battery charge level
- The car goes into emergency mode
- Battery charging problems
Causes
- Faulty voltage sensor in the control module
- Poor electrical connection
- Wiring harness damage
- Malfunction of the control module itself
- Software error in control module
How to Fix
- Battery Management Module Diagnostics
- Checking connections and wiring harness
- Replacing the voltage sensor if necessary
- Reflashing or replacing the control module if necessary
- Checking the battery status
Related codes
FAQ
What does the P1FEC code mean?
P1FEC is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance
What causes a P1FEC error code?
The most common causes of P1FEC include: Faulty voltage sensor in the control module; Poor electrical connection; Wiring harness damage; Malfunction of the control module itself.
How do I fix a P1FEC diagnostic trouble code?
To fix P1FEC: Battery Management Module Diagnostics. Checking connections and wiring harness. Replacing the voltage sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1FEC?
Limited driving only, diagnose soon
How much does it cost to fix P1FEC?
The estimated repair cost for P1FEC is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat