BMW DTC P1C71 – Universal Charger Extension Control Module DC/DC Converter Current Sensor Circuit Low
DTC P1C71 meaning on BMW
The DTC P1C71 fault code on BMW vehicles indicates an issue with the Universal Charger Extension Control Module DC/DC Converter Current Sensor Circuit being detected as low. This fault code is specific to the charging system of the vehicle and relates to the current sensor circuit within the DC/DC converter module.
BMW DTC P1C71 symptoms
Symptoms of the BMW DTC P1C71 fault code may include:
- Check Engine Light (MIL) illuminated on the dashboard
- Reduced charging performance
- Issues with the vehicle’s charging system
BMW DTC P1C71 causes
Potential causes of the BMW DTC P1C71 fault code include:
- Malfunctioning Universal Charger Extension Control Module
- Faulty DC/DC Converter Current Sensor
- Wiring or connection issues in the current sensor circuit
BMW DTC P1C71 seriousness
The seriousness of the BMW DTC P1C71 fault code lies in its impact on the vehicle’s charging system. If left unresolved, it can lead to charging inefficiencies and potential issues with the vehicle’s electrical system.
How to diagnose DTC P1C71 on BMW
To diagnose the DTC P1C71 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 DC/DC Converter Current Sensor for any visible damage
- Check the wiring and connections in the current sensor circuit for any issues
How to fix DTC P1C71 on BMW
Fixing the BMW DTC P1C71 fault code may involve the following steps:
- Replace the Universal Charger Extension Control Module if found to be faulty
- Replace the DC/DC Converter Current Sensor if it is determined to be the cause of the issue
- Repair any damaged wiring or connections in the current sensor circuit
How to erase DTC P1C71 on BMW
To erase the DTC P1C71 fault code on a BMW, the following steps can be taken:
- Use a diagnostic scanner to clear the fault code from the vehicle’s memory
- After fixing the underlying issue, ensure that the repair has been successful by checking for any recurring 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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