BMW DTC P0659 – Actuator Supply Voltage ‘A’ Circuit High
DTC P0659 meaning on BMW
The Diagnostic Trouble Code (DTC) P0659 for BMW refers to the Actuator Supply Voltage ‘A’ Circuit High. This code indicates that the Engine Control Module (ECM) has detected a higher than normal voltage in the actuator supply voltage circuit ‘A’.
BMW DTC P0659 symptoms
Symptoms of DTC P0659 on a BMW may include:
- Check Engine Light (MIL) illuminated
- Engine running rough or misfiring
- Reduced engine performance
- Vehicle may go into limp mode
BMW DTC P0659 causes
Common causes of DTC P0659 on a BMW include:
- Faulty actuator supply voltage sensor
- Short circuit or open circuit in the actuator supply voltage circuit
- ECM software issue
- Electrical wiring issues
BMW DTC P0659 seriousness
DTC P0659 should not be ignored as it can lead to engine performance issues and potential drivability concerns. It is recommended to address this code promptly to prevent further damage to the vehicle.
How to diagnose DTC P0659 on BMW
To diagnose DTC P0659 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the ECM.
- Inspect the actuator supply voltage sensor and its wiring for any visible damage or corrosion.
- Check for any loose connections or shorts in the actuator supply voltage circuit.
- Perform a voltage test on the actuator supply voltage circuit to verify the voltage levels.
How to fix DTC P0659 on BMW
To fix DTC P0659 on a BMW, you can try the following:
- Replace the faulty actuator supply voltage sensor if necessary.
- Repair any damaged wiring or connectors in the actuator supply voltage circuit.
- Clear the fault codes using a diagnostic scanner after the repairs have been made.
- If the issue persists, consult a professional mechanic for further diagnosis and repair.
How to erase DTC P0659 on BMW
To erase DTC P0659 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ECM. Follow the scanner’s instructions to erase the code properly. After clearing the code, it is recommended to test drive the vehicle to ensure the issue has been resolved.
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.