BMW DTC P2068 – Fuel Level Sensor ‘B’ Circuit High
DTC P2068 meaning on BMW
The Diagnostic Trouble Code (DTC) P2068 for BMW indicates a fault in the Fuel Level Sensor ‘B’ Circuit, specifically a high voltage condition. This fault is related to the fuel level sensor that measures the amount of fuel in the tank and sends this information to the vehicle’s engine control module (ECM).
BMW DTC P2068 symptoms
Symptoms of DTC P2068 on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Inaccurate fuel level readings on the fuel gauge
- Fluctuating fuel gauge readings
- Possible stalling or rough idling
BMW DTC P2068 causes
The common causes of DTC P2068 on a BMW include:
- Faulty fuel level sensor ‘B’
- Corroded or damaged wiring in the fuel level sensor circuit
- Issues with the ECM or related control modules
BMW DTC P2068 seriousness
While DTC P2068 is not a critical issue that affects the drivability of the vehicle, it is important to address this fault to ensure accurate fuel level readings and proper operation of the fuel system. Ignoring this fault may lead to inconvenience and potential fuel-related issues.
How to diagnose DTC P2068 on BMW
To diagnose DTC P2068 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the fuel level sensor ‘B’ and its wiring for any visible damage or corrosion
- Check the voltage and resistance of the sensor to determine if it is functioning correctly
- Perform a visual inspection of the ECM and related components
How to fix DTC P2068 on BMW
To fix DTC P2068 on a BMW, the following steps may be taken:
- Replace the faulty fuel level sensor ‘B’ with a new, OEM part
- Repair or replace any damaged wiring in the fuel level sensor circuit
- If necessary, reprogram or replace the ECM or related control modules
How to erase DTC P2068 on BMW
To erase DTC P2068 on a BMW, the fault code can be cleared using a diagnostic scanner or by disconnecting the vehicle’s battery for a few minutes. However, it is recommended to address the underlying issue causing the fault code before clearing it to prevent it from reoccurring.
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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