BMW DTC P0C38 – DC/DC Converter Temperature Sensor ‘A’ Circuit
DTC P0C38 meaning on BMW
The DTC P0C38 on a BMW refers to an issue with the DC/DC Converter Temperature Sensor ‘A’ Circuit. This diagnostic trouble code indicates that there is a problem with the sensor circuit responsible for monitoring the temperature of the DC/DC converter in the vehicle.
BMW DTC P0C38 symptoms
Symptoms of the DTC P0C38 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Reduced fuel efficiency
- Engine running rough or stalling
- Loss of power
BMW DTC P0C38 causes
Common causes of the DTC P0C38 on a BMW include:
- Faulty DC/DC converter temperature sensor
- Wiring or connection issues in the sensor circuit
- Corrosion or damage to sensor components
BMW DTC P0C38 seriousness
The DTC P0C38 should be addressed promptly as it can lead to potential drivability issues and affect the overall performance of the vehicle. Ignoring this code may result in further damage to the DC/DC converter system.
How to diagnose DTC P0C38 on BMW
To diagnose the DTC P0C38 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the DC/DC converter temperature sensor and its wiring for any visible damage
- Test the sensor’s resistance and voltage readings
- Check for any loose connections or corrosion in the circuit
How to fix DTC P0C38 on BMW
To fix the DTC P0C38 on a BMW, the following steps may be taken:
- Replace the faulty DC/DC converter temperature sensor
- Repair or replace any damaged wiring or connections in the sensor circuit
- Clean any corrosion from sensor components
- Clear the fault codes and reset the Check Engine Light
How to erase DTC P0C38 on BMW
To erase the DTC P0C38 on a BMW, a diagnostic scanner can be used to clear the fault codes stored in the vehicle’s computer system. Once the issue has been addressed and fixed, the codes can be reset, and the Check Engine Light should turn off.
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.