BMW DTC P1C04 – Hybrid/EV Battery Pack Charging Voltage High
DTC P1C04 meaning on BMW
The Diagnostic Trouble Code (DTC) P1C04 for BMW indicates that there is a high voltage condition detected in the hybrid/EV battery pack charging system.
BMW DTC P1C04 symptoms
Symptoms of the BMW DTC P1C04 may include:
- Check Engine Light illuminated
- Reduced hybrid/EV system performance
- Increased battery temperature
- Reduced fuel efficiency
BMW DTC P1C04 causes
Common causes of the BMW DTC P1C04 may include:
- Faulty battery pack temperature sensor
- Issues with the battery management system
- High voltage charging system malfunction
- Wiring or connection problems
BMW DTC P1C04 seriousness
The BMW DTC P1C04 should be addressed promptly as it can lead to further damage to the hybrid/EV battery pack and affect the overall performance of the vehicle.
How to diagnose DTC P1C04 on BMW
To diagnose the DTC P1C04 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the battery pack temperature sensor and wiring
- Check the battery management system for any faults
- Test the high voltage charging system components
How to fix DTC P1C04 on BMW
To fix the DTC P1C04 on a BMW, the following steps may be taken:
- Replace the faulty battery pack temperature sensor
- Repair any wiring or connection issues
- Address any faults in the battery management system
- Repair or replace components in the high voltage charging system
How to erase DTC P1C04 on BMW
After fixing the underlying issue causing the DTC P1C04, the code can be erased using a diagnostic scanner that has the capability to clear fault codes.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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