P264C – BMW DTC

BMW DTC P264C – ‘A’ Rocker Arm Actuator Position Sensor Circuit Low (Bank 1)

DTC P264C meaning on BMW

The Diagnostic Trouble Code (DTC) P264C on a BMW indicates an issue with the ‘A’ Rocker Arm Actuator Position Sensor Circuit being detected as low in Bank 1. This means that the sensor responsible for monitoring the position of the rocker arm actuator in Bank 1 is reporting a lower voltage or signal than expected by the Engine Control Module (ECM).

BMW DTC P264C symptoms

Symptoms of the BMW DTC P264C may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Reduced engine performance or power
• Engine running rough or misfiring
• Decreased fuel efficiency

BMW DTC P264C causes

Common causes of the BMW DTC P264C may include:

• Defective ‘A’ Rocker Arm Actuator Position Sensor
• Wiring or connector issues in the sensor circuit
• Faulty Engine Control Module (ECM)

BMW DTC P264C seriousness

The seriousness of the BMW DTC P264C code lies in the potential impact on engine performance and efficiency. Ignoring this code can lead to further damage to engine components and may result in more costly repairs if left unresolved.

How to diagnose DTC P264C on BMW

To diagnose the DTC P264C on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the ECM
2. Inspect the wiring and connectors related to the ‘A’ Rocker Arm Actuator Position Sensor
3. Test the sensor for proper voltage and signal output
4. Check for any visible signs of damage or wear on the sensor

How to fix DTC P264C on BMW

To fix the DTC P264C on a BMW, you may need to:

1. Replace the ‘A’ Rocker Arm Actuator Position Sensor if found faulty
2. Repair any damaged wiring or connectors in the sensor circuit
3. Reset the fault codes using a diagnostic scanner after making the necessary repairs

How to erase DTC P264C on BMW

To erase the DTC P264C on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes stored in the ECM
2. Ensure that the underlying issue causing the fault code has been addressed and resolved
3. Perform a test drive to confirm that the code does not reappear

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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