BMW DTC P1289 – Alternative Fuel Sensor Circuit High
DTC P1289 meaning on BMW
DTC P1289 on a BMW indicates an issue with the Alternative Fuel Sensor Circuit registering a high voltage. This sensor is responsible for monitoring the fuel composition in vehicles that run on alternative fuels such as ethanol or biodiesel.
BMW DTC P1289 symptoms
Symptoms of DTC P1289 on a BMW may include poor engine performance, decreased fuel efficiency, rough idling, and potentially an illuminated check engine light on the dashboard.
BMW DTC P1289 causes
The causes of DTC P1289 on a BMW can vary and may include a faulty alternative fuel sensor, wiring issues in the sensor circuit, or a problem with the engine control module (ECM).
BMW DTC P1289 seriousness
While DTC P1289 may not cause immediate harm to the vehicle, it can lead to decreased performance and fuel efficiency if left unresolved. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P1289 on BMW
To diagnose DTC P1289 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the alternative fuel sensor and its wiring. Testing the sensor’s resistance and checking for any loose connections can help pinpoint the issue.
How to fix DTC P1289 on BMW
Fixing DTC P1289 on a BMW may involve replacing the alternative fuel sensor if it is found to be faulty. Additionally, repairing any damaged wiring or addressing issues with the engine control module (ECM) may be necessary to resolve the high voltage reading in the sensor circuit.
How to erase DTC P1289 on BMW
Once the underlying issue causing DTC P1289 on a BMW has been fixed, the fault code can be cleared using a diagnostic scanner. By erasing the code, the check engine light should turn off, indicating that the problem has been successfully addressed.