BMW DTC P0393 – Camshaft Position Sensor ‘B’ Circuit High (Bank 2)
DTC P0393 meaning on BMW
The Diagnostic Trouble Code (DTC) P0393 for BMW indicates an issue with the Camshaft Position Sensor ‘B’ Circuit High on Bank 2. This means that the signal from the camshaft position sensor on bank 2 is registering a voltage higher than the specified range.
BMW DTC P0393 symptoms
Symptoms of DTC P0393 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Engine running rough or misfiring
- Reduced engine performance
- Difficulty starting the engine
BMW DTC P0393 causes
Common causes of DTC P0393 on a BMW include:
- Faulty camshaft position sensor
- Wiring or connector issues in the camshaft position sensor circuit
- Engine timing out of sync
BMW DTC P0393 seriousness
DTC P0393 should not be ignored as it can lead to engine performance issues and potential damage if left unresolved. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P0393 on BMW
To diagnose DTC P0393 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the camshaft position sensor and its wiring for any visible damage
- Check the engine timing to ensure it is in sync
How to fix DTC P0393 on BMW
To fix DTC P0393 on a BMW, you can try the following solutions:
- Replace the faulty camshaft position sensor
- Repair any damaged wiring or connectors in the sensor circuit
- Reset the engine timing if necessary
How to erase DTC P0393 on BMW
To erase DTC P0393 on a BMW, you can clear the fault codes using a diagnostic scanner. After addressing the underlying issue causing the fault code, you can reset the codes to 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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