BMW DTC P1C81 – Universal Charger Extension Control Module DC/DC Converter Resonant Inductor Temperature Sensor Circuit High
DTC P1C81 meaning on BMW
DTC P1C81 on a BMW refers to the Universal Charger Extension Control Module DC/DC Converter Resonant Inductor Temperature Sensor Circuit High. This diagnostic trouble code indicates that there is a high voltage condition detected in the temperature sensor circuit of the DC/DC converter resonant inductor within the universal charger extension control module.
BMW DTC P1C81 symptoms
Symptoms of BMW DTC P1C81 may include:
- Check Engine Light illuminated on the dashboard
- Reduced charging efficiency of the vehicle’s battery
- Potential drivability issues
BMW DTC P1C81 causes
Common causes of BMW DTC P1C81 may include:
- Faulty temperature sensor within the DC/DC converter resonant inductor
- Wiring or connection issues in the temperature sensor circuit
- Internal control module fault
BMW DTC P1C81 seriousness
The seriousness of BMW DTC P1C81 lies in the potential impact on the charging system of the vehicle. If left unresolved, it can lead to battery charging issues and affect the overall performance of the vehicle.
How to diagnose DTC P1C81 on BMW
To diagnose BMW DTC P1C81, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s system
- Inspect the temperature sensor circuit for any visible damage or loose connections
- Test the temperature sensor for proper resistance values
- Check the control module for any internal faults
How to fix DTC P1C81 on BMW
To fix BMW DTC P1C81, the following steps may be taken:
- Replace the faulty temperature sensor within the DC/DC converter resonant inductor
- Repair any wiring or connection issues in the temperature sensor circuit
- If the control module is faulty, replace or reprogram it as necessary
How to erase DTC P1C81 on BMW
To erase BMW DTC P1C81, the fault codes can be cleared using a diagnostic scanner. After the necessary repairs have been made, the codes can be reset to see if the issue has been resolved successfully.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.