BMW DTC P264B – ‘A’ Rocker Arm Actuator Position Sensor Circuit Range/Performance (Bank 1)
DTC P264B meaning on BMW
DTC P264B on a BMW indicates a fault with the ‘A’ Rocker Arm Actuator Position Sensor Circuit Range/Performance in Bank 1. This fault code is specific to the sensor that monitors the position of the rocker arm actuator in the engine’s cylinder head.
BMW DTC P264B symptoms
Symptoms of DTC P264B on a BMW may include rough idling, reduced engine performance, engine misfires, and in some cases, the Check Engine Light may illuminate on the dashboard.
BMW DTC P264B causes
The common causes of DTC P264B on a BMW include a faulty rocker arm actuator position sensor, wiring issues in the sensor circuit, or a problem with the engine control module (ECM).
BMW DTC P264B seriousness
While DTC P264B may not cause immediate engine failure, it can lead to poor engine performance and potentially cause damage to other engine components if left unresolved. It is recommended to address this issue promptly.
How to diagnose DTC P264B on BMW
To diagnose DTC P264B on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the ECM. They would then inspect the rocker arm actuator position sensor and its wiring for any visible damage or loose connections. Testing the sensor’s resistance and checking for proper voltage signals can help pinpoint the issue.
How to fix DTC P264B on BMW
Fixing DTC P264B on a BMW may involve replacing the faulty ‘A’ Rocker Arm Actuator Position Sensor, repairing any damaged wiring in the sensor circuit, or addressing any ECM issues. It is recommended to follow the manufacturer’s diagnostic and repair procedures to ensure a proper fix.
How to erase DTC P264B on BMW
Once the underlying issue causing DTC P264B on a BMW has been resolved, the fault codes can be cleared using a diagnostic scanner. This will reset the Check Engine Light and erase the DTC P264B code from the ECM’s memory.
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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