BMW DTC P01B3 – Alternative Fuel Tank ‘A’ Level Sensor Circuit Intermittent/Erratic
DTC P01B3 meaning on BMW
The DTC P01B3 code on a BMW indicates an issue with the Alternative Fuel Tank ‘A’ Level Sensor Circuit being intermittent or erratic. This means that there is a problem with the sensor that measures the fuel level in the alternative fuel tank.
BMW DTC P01B3 symptoms
Symptoms of the DTC P01B3 code on a BMW may include inaccurate fuel level readings on the dashboard, fluctuating fuel level readings, or the fuel gauge showing empty even when there is fuel in the tank.
BMW DTC P01B3 causes
The causes of the DTC P01B3 code on a BMW can vary, but common reasons include a faulty fuel level sensor, wiring issues in the sensor circuit, or a problem with the fuel tank itself.
BMW DTC P01B3 seriousness
While the DTC P01B3 code may not directly affect the drivability of the vehicle, it is important to address this issue as inaccurate fuel level readings can lead to running out of fuel unexpectedly or other potential problems.
How to diagnose DTC P01B3 on BMW
To diagnose the DTC P01B3 code on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault codes and then inspect the fuel level sensor and its wiring for any visible damage or corrosion. Testing the sensor’s resistance and checking for proper voltage supply are also common diagnostic steps.
How to fix DTC P01B3 on BMW
Fixing the DTC P01B3 code on a BMW may involve replacing the faulty fuel level sensor, repairing any damaged wiring in the sensor circuit, or addressing any issues with the fuel tank itself. It is recommended to follow the manufacturer’s repair procedures and use OEM parts for a proper fix.
How to erase DTC P01B3 on BMW
Once the underlying issue causing the DTC P01B3 code on a BMW has been fixed, the code can be cleared using a diagnostic scanner. This will reset the vehicle’s onboard computer and turn off the check engine light. It is important to ensure that the repair has been successful before clearing the code.
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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