BMW DTC P0389 – Crankshaft Position Sensor ‘B’ Circuit Intermittent
DTC P0389 meaning on BMW
The DTC P0389 code on a BMW indicates a fault with the Crankshaft Position Sensor ‘B’ circuit. This fault is intermittent, meaning that the issue comes and goes, rather than being a constant problem.
BMW DTC P0389 symptoms
Some common symptoms associated with the DTC P0389 code on a BMW may include:
- Intermittent stalling
- Engine misfires
- Difficulty starting the engine
- Reduced engine performance
BMW DTC P0389 causes
There are several potential causes for the DTC P0389 code on a BMW, including:
- Faulty Crankshaft Position Sensor ‘B’
- Wiring or connector issues in the sensor circuit
- Intermittent electrical connection problems
BMW DTC P0389 seriousness
The DTC P0389 code should not be ignored, as it can lead to drivability issues and potential engine damage if left unresolved. It is important to address this code promptly to prevent further problems.
How to diagnose DTC P0389 on BMW
Diagnosing the DTC P0389 code on a BMW typically involves the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the Crankshaft Position Sensor ‘B’ and its wiring for any visible damage
- Perform a continuity test on the sensor circuit
- Check for any loose or corroded connections
How to fix DTC P0389 on BMW
To fix the DTC P0389 code on a BMW, you may need to:
- Replace the Crankshaft Position Sensor ‘B’ if it is found to be faulty
- Repair any damaged wiring or connectors in the sensor circuit
- Clear the fault code and test drive the vehicle to ensure the issue is resolved
How to erase DTC P0389 on BMW
To erase the DTC P0389 code on a BMW, you can use a diagnostic scanner to clear the code from the vehicle’s computer. Once the repair has been completed and the issue resolved, clearing the code will reset the system 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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