BMW DTC P1022 – VVL-Sensors Supply Voltage Circuit Low (Bank 2)
DTC P1022 meaning on BMW
The Diagnostic Trouble Code (DTC) P1022 for BMW refers to the VVL-Sensors Supply Voltage Circuit Low on Bank 2. This code indicates that there is a low voltage condition detected in the Variable Valve Lift (VVL) system sensors on the second bank of the engine.
BMW DTC P1022 symptoms
Symptoms of the BMW DTC P1022 may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Reduced engine performance
- Engine misfires
- Rough idling
BMW DTC P1022 causes
Common causes of the BMW DTC P1022 include:
- Faulty VVL sensors
- Wiring or connector issues in the VVL sensor circuit
- Low voltage supply to the VVL sensors
BMW DTC P1022 seriousness
The DTC P1022 on a BMW is considered a moderate seriousness issue. While it may not cause immediate engine failure, it can lead to reduced engine performance and potential long-term damage if left unresolved.
How to diagnose DTC P1022 on BMW
To diagnose the DTC P1022 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the VVL sensors and their wiring for any visible damage
- Check the voltage supply to the VVL sensors
- Perform a continuity test on the sensor circuit
How to fix DTC P1022 on BMW
To fix the DTC P1022 on a BMW, you can try the following:
- Replace faulty VVL sensors
- Repair or replace damaged wiring or connectors in the sensor circuit
- Ensure proper voltage supply to the VVL sensors
- Clear the fault codes and reset the Check Engine Light
How to erase DTC P1022 on BMW
To erase the DTC P1022 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s Engine Control Module (ECM). Once the codes are cleared, the Check Engine Light should turn off. It is important to ensure that the underlying issue causing the fault code has been addressed 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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