P1FC4
Hybrid/EV Battery Interface Control Module 6 5 V Reference Circuit
P1FC4 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 6 5 V Reference Circuit. Common causes: open or short circuit in 5v circuit, battery interface module fault. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- Incorrect battery level readings
- The vehicle goes into emergency mode
- Errors in the operation of the energy recovery system
Causes
- Open or short circuit in 5V circuit
- Battery Interface Module Fault
- Module grounding problems
- Corrosion or poor contact in connectors
- Malfunction of the main control unit of the hybrid system
How to Fix
- Check the integrity of the 5V circuit and grounding
- Inspect connectors and contacts for corrosion
- Check the voltage at the module output
- Replace the interface module if necessary
- Scan the system for additional errors
Related codes
FAQ
What does the P1FC4 code mean?
P1FC4 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 6 5 V Reference Circuit
What causes a P1FC4 error code?
The most common causes of P1FC4 include: Open or short circuit in 5V circuit; Battery Interface Module Fault; Module grounding problems; Corrosion or poor contact in connectors.
How do I fix a P1FC4 diagnostic trouble code?
To fix P1FC4: Check the integrity of the 5V circuit and grounding. Inspect connectors and contacts for corrosion. Check the voltage at the module output. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1FC4?
Do not drive — repair immediately
How much does it cost to fix P1FC4?
The estimated repair cost for P1FC4 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat