BMW DTC P1520 – Engine Oil Quality Sensor Level Measurement (M52: ‘B’ Camshaft Position Actuator Control Circuit (Bank 1))
DTC P1520 meaning on BMW
DTC P1520 on a BMW refers to the Engine Oil Quality Sensor Level Measurement (M52: ‘B’ Camshaft Position Actuator Control Circuit (Bank 1)). This diagnostic trouble code indicates an issue with the ‘B’ camshaft position actuator control circuit on Bank 1 of the engine.
BMW DTC P1520 symptoms
Symptoms of DTC P1520 on a BMW may include rough idling, engine misfires, reduced engine performance, and in some cases, the Check Engine Light may illuminate on the dashboard.
BMW DTC P1520 causes
The common causes of DTC P1520 on a BMW can include a faulty camshaft position actuator, wiring issues in the control circuit, or a malfunctioning engine oil quality sensor.
BMW DTC P1520 seriousness
While DTC P1520 may not cause immediate engine failure, it can lead to poor engine performance and potentially affect the overall drivability of the vehicle. It is recommended to address this issue promptly to prevent further damage.
How to diagnose DTC P1520 on BMW
To diagnose DTC P1520 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer system. They would then perform a visual inspection of the camshaft position actuator and related wiring to check for any visible damage or loose connections.
How to fix DTC P1520 on BMW
Fixing DTC P1520 on a BMW may involve replacing the faulty camshaft position actuator, repairing any damaged wiring in the control circuit, or replacing the engine oil quality sensor if necessary. It is recommended to follow the manufacturer’s repair procedures and use genuine parts for a proper fix.
How to erase DTC P1520 on BMW
To erase DTC P1520 on a BMW, a mechanic can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer system. Once the issue has been addressed and fixed, the mechanic can then reset the Check Engine Light and verify 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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