BMW DTC P01B6 – Alternative Fuel Rail Temperature Sensor Circuit Low
DTC P01B6 meaning on BMW
The DTC P01B6 fault code on BMW vehicles indicates an issue with the Alternative Fuel Rail Temperature Sensor Circuit being detected as low. This sensor is responsible for monitoring the temperature of the fuel rail in vehicles equipped with alternative fuel systems, such as those running on compressed natural gas (CNG) or propane.
BMW DTC P01B6 symptoms
Symptoms of the DTC P01B6 code on a BMW may include poor engine performance, decreased fuel efficiency, rough idling, and potentially stalling or difficulty starting the vehicle.
BMW DTC P01B6 causes
The causes of the DTC P01B6 fault code on a BMW can vary, but common reasons include a faulty alternative fuel rail temperature sensor, wiring issues in the sensor circuit, or a problem with the sensor’s connection to the vehicle’s ECU.
BMW DTC P01B6 seriousness
While the DTC P01B6 code may not always result in immediate drivability issues, it is important to address this fault code promptly to prevent potential long-term damage to the vehicle’s engine and fuel system.
How to diagnose DTC P01B6 on BMW
To diagnose the DTC P01B6 code 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 rail temperature sensor and its wiring. Testing the sensor’s resistance and checking for any loose connections or damaged wiring can help pinpoint the issue.
How to fix DTC P01B6 on BMW
Fixing the DTC P01B6 fault code on a BMW often involves replacing the alternative fuel rail temperature sensor if it is found to be faulty. Additionally, repairing any damaged wiring or connectors in the sensor circuit can help resolve the issue. Once the repairs are made, clearing the fault code and performing a test drive to ensure the problem is resolved is recommended.
How to erase DTC P01B6 on BMW
To erase the DTC P01B6 fault code on a BMW, a diagnostic scanner can be used to clear the code from the vehicle’s ECU memory. After the fault code is cleared, it is advisable to perform a test drive to confirm that the issue has been successfully resolved.
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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