BMW DTC P1068 – VVL-Reference Sensor Reset Error (Bank 2)
DTC P1068 meaning on BMW
The Diagnostic Trouble Code (DTC) P1068 for BMW refers to a VVL-Reference Sensor Reset Error on Bank 2. This error code indicates an issue with the Variable Valve Lift (VVL) system’s reference sensor on the second bank of the engine.
BMW DTC P1068 symptoms
Symptoms of the DTC P1068 on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Engine running rough or misfiring
- Reduced engine performance
- In some cases, the vehicle may go into a limp mode
BMW DTC P1068 causes
The DTC P1068 on a BMW can be caused by various factors, including:
- Malfunctioning VVL-Reference Sensor
- Wiring or connector issues related to the sensor
- Faulty engine control module (ECM)
- Mechanical issues within the VVL system
BMW DTC P1068 seriousness
The seriousness of the DTC P1068 error code on a BMW depends on the underlying cause. Ignoring this issue can lead to further engine performance problems and potential damage if left unresolved. It is recommended to address this code promptly to prevent any long-term issues.
How to diagnose DTC P1068 on BMW
To diagnose the DTC P1068 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the error code and any related codes
- Inspect the VVL-Reference Sensor and its wiring for any visible damage
- Test the sensor’s functionality using a multimeter
- Check the ECM for any stored codes or issues
- Perform a visual inspection of the VVL system components
How to fix DTC P1068 on BMW
Fixing the DTC P1068 on a BMW typically involves the following steps:
- Replace the faulty VVL-Reference Sensor if found defective
- Repair or replace any damaged wiring or connectors related to the sensor
- If the ECM is faulty, it may need to be reprogrammed or replaced
- Ensure proper functioning of the VVL system components
How to erase DTC P1068 on BMW
To erase the DTC P1068 code on a BMW, you can use a diagnostic scanner to clear the code after the underlying issue has been addressed and fixed. Once the repair is completed, the scanner can be used to reset the Check Engine Light and erase the stored 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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