BMW DTC P143C – Direct Ozone Reduction Catalyst Temperature / Radiator Coolant Temperature Correlation
DTC P143C meaning on BMW
DTC P143C on a BMW refers to the Direct Ozone Reduction Catalyst Temperature / Radiator Coolant Temperature Correlation. This diagnostic trouble code indicates that there is a discrepancy between the temperature readings of the direct ozone reduction catalyst and the radiator coolant.
BMW DTC P143C symptoms
Symptoms of DTC P143C on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Potential overheating issues
BMW DTC P143C causes
Common causes of DTC P143C on a BMW include:
- Failed direct ozone reduction catalyst temperature sensor
- Malfunctioning radiator coolant temperature sensor
- Wiring or connection issues
BMW DTC P143C seriousness
DTC P143C should not be ignored as it can lead to reduced engine efficiency and potential overheating problems. It is recommended to address this issue promptly to prevent further damage to the vehicle.
How to diagnose DTC P143C on BMW
To diagnose DTC P143C on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the direct ozone reduction catalyst temperature sensor
- Check the radiator coolant temperature sensor
- Inspect the wiring and connections for any damage
How to fix DTC P143C on BMW
To fix DTC P143C on a BMW, the following steps may be taken:
- Replace the faulty direct ozone reduction catalyst temperature sensor
- Replace the malfunctioning radiator coolant temperature sensor
- Repair any damaged wiring or connections
How to erase DTC P143C on BMW
After fixing the underlying issue causing DTC P143C on a BMW, the fault codes can be cleared using a diagnostic scanner. This will erase the DTC P143C code from the vehicle’s memory and turn off the Check Engine Light.
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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