P1FC9
Hybrid/EV Battery Interface Control Module 5 Cell Balancing Circuit
P1FC9 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 5 Cell Balancing Circuit. Common causes: balancing control module malfunction, open or short circuit in the balancing circuit. Estimated repair cost: $56–278.
Symptoms
- Reduced range on a single charge
- Increased charging time
- Unstable operation of the power plant
- Warning messages on the dashboard
- Reduced vehicle power
Causes
- Balancing control module malfunction
- Open or short circuit in the balancing circuit
- Wiring harness damage
- Software error in control module
- Battery cell degradation
How to Fix
- Diagnose the battery control module
- Check the integrity of the balancing circuit
- Inspect the wiring harness for damage
- Update control module software
- If necessary, replace faulty battery cells
Related codes
FAQ
What does the P1FC9 code mean?
P1FC9 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 5 Cell Balancing Circuit
What causes a P1FC9 error code?
The most common causes of P1FC9 include: Balancing control module malfunction; Open or short circuit in the balancing circuit; Wiring harness damage; Software error in control module.
How do I fix a P1FC9 diagnostic trouble code?
To fix P1FC9: Diagnose the battery control module. Check the integrity of the balancing circuit. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1FC9?
Limited driving only, diagnose soon
How much does it cost to fix P1FC9?
The estimated repair cost for P1FC9 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat