BMW DTC P2658 – ‘A’ Rocker Arm Actuator Control Circuit Low (Bank 2)
DTC P2658 meaning on BMW
The Diagnostic Trouble Code (DTC) P2658 for BMW refers to the ‘A’ Rocker Arm Actuator Control Circuit Low on Bank 2. This code indicates that there is a detected low voltage condition in the control circuit of the ‘A’ rocker arm actuator on the second bank of the engine.
BMW DTC P2658 symptoms
Symptoms of DTC P2658 on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Engine running rough or misfiring
- Reduced engine performance
- Increased fuel consumption
BMW DTC P2658 causes
Common causes of DTC P2658 on a BMW include:
- Faulty ‘A’ rocker arm actuator
- Wiring or connector issues in the control circuit
- Low engine oil level or poor oil quality
- Internal engine mechanical problems
BMW DTC P2658 seriousness
DTC P2658 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 P2658 on BMW
To diagnose DTC P2658 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 related to the ‘A’ rocker arm actuator
- Check the engine oil level and quality
- Perform a visual inspection of the ‘A’ rocker arm actuator for any signs of damage
- Test the rocker arm actuator control circuit for continuity and proper voltage
How to fix DTC P2658 on BMW
To fix DTC P2658 on a BMW, you can consider the following actions:
- Replace the faulty ‘A’ rocker arm actuator
- Repair or replace any damaged wiring or connectors in the control circuit
- Ensure the engine oil level is adequate and of good quality
- Address any internal engine mechanical issues if detected
How to erase DTC P2658 on BMW
To erase DTC P2658 on a BMW, you can use a diagnostic scanner to clear the code after the underlying issue has been resolved. This will reset the Check Engine Light and allow you to monitor the system for any reoccurrence of the fault 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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.