BMW DTC P0189 – Fuel Temperature Sensor ‘B’ Circuit Intermittent
DTC P0189 meaning on BMW
The Diagnostic Trouble Code (DTC) P0189 for BMW refers to a fault in the Fuel Temperature Sensor ‘B’ circuit. This code indicates that the Engine Control Module (ECM) has detected an intermittent issue with the fuel temperature sensor circuit, specifically sensor ‘B’.
BMW DTC P0189 symptoms
Symptoms of DTC P0189 on a BMW may include:
- Check Engine Light (MIL) illuminated
- Decreased fuel efficiency
- Engine running rough or stalling
- Issues with engine performance
BMW DTC P0189 causes
Common causes of DTC P0189 on a BMW include:
- Faulty fuel temperature sensor ‘B’
- Wiring or connector issues in the sensor circuit
- Corrosion or poor connections in the sensor circuit
- ECM software or hardware problems
BMW DTC P0189 seriousness
While DTC P0189 may not cause immediate drivability issues, it is important to address this fault promptly. Ignoring this code can lead to decreased fuel efficiency and potential engine performance problems over time.
How to diagnose DTC P0189 on BMW
To diagnose DTC P0189 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the wiring and connectors in the fuel temperature sensor ‘B’ circuit
- Test the fuel temperature sensor ‘B’ for proper resistance and voltage readings
- Check for any corrosion or damage in the sensor circuit
- Verify the ECM software for any updates or issues
How to fix DTC P0189 on BMW
To fix DTC P0189 on a BMW, you can try the following solutions:
- Replace the faulty fuel temperature sensor ‘B’
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Clean any corrosion in the sensor circuit and ensure proper connections
- Update the ECM software if necessary
How to erase DTC P0189 on BMW
To erase DTC P0189 on a BMW, you can use a diagnostic scanner to clear the fault code after addressing the underlying issue. Once the fault has been fixed, you can reset the ECM and clear the code 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
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.