BMW DTC P2664 – ‘B’ Rocker Arm Actuator Control Circuit High (Bank 2)
DTC P2664 meaning on BMW
The Diagnostic Trouble Code (DTC) P2664 for BMW refers to the ‘B’ Rocker Arm Actuator Control Circuit High on Bank 2. This code indicates that there is a high voltage condition detected in the control circuit of the ‘B’ rocker arm actuator on the second bank of the engine.
BMW DTC P2664 symptoms
Symptoms of DTC P2664 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Engine running rough or misfiring
- Reduced engine performance
- Increased fuel consumption
BMW DTC P2664 causes
Common causes of DTC P2664 on a BMW include:
- Faulty rocker arm actuator
- Wiring or connector issues in the actuator control circuit
- Engine control module (ECM) malfunction
BMW DTC P2664 seriousness
DTC P2664 should not be ignored as it can lead to engine performance issues and potential damage if left unresolved. It is recommended to address this code promptly to prevent further complications.
How to diagnose DTC P2664 on BMW
To diagnose DTC P2664 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the wiring and connectors in the ‘B’ rocker arm actuator control circuit
- Test the rocker arm actuator for proper operation
- Check the ECM for any faults or malfunctions
How to fix DTC P2664 on BMW
To fix DTC P2664 on a BMW, you can consider the following actions:
- Replace the faulty rocker arm actuator
- Repair any damaged wiring or connectors in the control circuit
- If the ECM is faulty, it may need to be reprogrammed or replaced
How to erase DTC P2664 on BMW
To erase DTC P2664 on a BMW, you can use a diagnostic scanner to clear the code after the underlying issue has been resolved. Once the repair has been completed, you can reset the code to turn off the Check Engine Light.
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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