BMW DTC P1C79 – Universal Charger Extension Control Module DC/DC Converter Voltage Sensor Circuit Low
DTC P1C79 meaning on BMW
The DTC P1C79 fault code on BMW vehicles indicates an issue with the Universal Charger Extension Control Module DC/DC Converter Voltage Sensor Circuit being detected as low. This fault code is specific to the charging system of the vehicle and relates to the voltage sensor circuit within the DC/DC converter.
BMW DTC P1C79 symptoms
Symptoms of the BMW DTC P1C79 code may include:
- Charging system warning light illuminated on the dashboard
- Issues with the vehicle’s charging system
- Possible battery-related problems
BMW DTC P1C79 causes
Common causes of the BMW DTC P1C79 fault code include:
- Faulty Universal Charger Extension Control Module
- Issues with the DC/DC converter voltage sensor circuit
- Wiring or connection problems in the charging system
BMW DTC P1C79 seriousness
The DTC P1C79 fault code should be addressed promptly as it relates to the vehicle’s charging system. Ignoring this fault code can lead to potential issues with the battery and overall electrical system of the vehicle.
How to diagnose DTC P1C79 on BMW
To diagnose the DTC P1C79 fault code on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the Universal Charger Extension Control Module and its connections
- Check the DC/DC converter voltage sensor circuit for any faults
- Test the charging system components for proper operation
How to fix DTC P1C79 on BMW
To fix the DTC P1C79 fault code on a BMW, the following steps may be taken:
- Repair or replace the faulty Universal Charger Extension Control Module
- Address any issues with the DC/DC converter voltage sensor circuit
- Repair or replace any damaged wiring or connections in the charging system
- Clear the fault code from the vehicle’s ECU after completing repairs
How to erase DTC P1C79 on BMW
To erase the DTC P1C79 fault code on a BMW, a diagnostic scanner can be used to clear the code from the vehicle’s ECU memory. After addressing the underlying issue causing the fault code, clearing it from the system will reset the warning light and ensure proper operation of the charging system.
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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