BMW DTC P1C28 – DC/DC Converter Internal DC Link Current Sensor Circuit Current Implausible
DTC P1C28 meaning on BMW
DTC P1C28 on a BMW refers to the DC/DC Converter Internal DC Link Current Sensor Circuit Current Implausible fault. This diagnostic trouble code indicates that there is an issue with the internal DC link current sensor circuit of the DC/DC converter in the vehicle.
BMW DTC P1C28 symptoms
Symptoms of DTC P1C28 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Reduced power or performance
- Vehicle may go into a reduced power mode
- Increased fuel consumption
BMW DTC P1C28 causes
Common causes of DTC P1C28 on a BMW include:
- Faulty internal DC link current sensor
- Wiring or connection issues in the sensor circuit
- DC/DC converter malfunction
BMW DTC P1C28 seriousness
The seriousness of DTC P1C28 on a BMW can vary. While the vehicle may still be operable with this fault, it is important to address it promptly to prevent potential damage to other components and ensure optimal performance.
How to diagnose DTC P1C28 on BMW
To diagnose DTC P1C28 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the internal DC link current sensor and its wiring for any visible damage or corrosion
- Test the DC/DC converter for proper operation
How to fix DTC P1C28 on BMW
To fix DTC P1C28 on a BMW, the following steps may be taken:
- Replace the faulty internal DC link current sensor
- Repair any damaged wiring or connections in the sensor circuit
- If the DC/DC converter is found to be faulty, it may need to be replaced
How to erase DTC P1C28 on BMW
To erase DTC P1C28 on a BMW, a mechanic can use a diagnostic scanner to clear the fault code from the vehicle’s memory after the underlying issue has been addressed and fixed.
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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