BMW DTC P0520 – Engine Oil Pressure Sensor/Switch ‘A’ Circuit
DTC P0520 meaning on BMW
The Diagnostic Trouble Code (DTC) P0520 for BMW refers to an issue with the Engine Oil Pressure Sensor/Switch ‘A’ Circuit. This code indicates that there is a malfunction in the circuit that controls the engine oil pressure sensor or switch.
BMW DTC P0520 symptoms
Symptoms of DTC P0520 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Low oil pressure warning light
- Loss of engine power
- Engine stalling or rough idling
BMW DTC P0520 causes
Common causes of DTC P0520 on a BMW include:
- Defective engine oil pressure sensor
- Faulty engine oil pressure switch
- Wiring or connector issues in the circuit
- Low engine oil level or poor quality oil
BMW DTC P0520 seriousness
Ignoring DTC P0520 on a BMW can lead to serious engine damage due to insufficient lubrication. It is important to address this issue promptly to prevent potential engine failure.
How to diagnose DTC P0520 on BMW
To diagnose DTC P0520 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the engine oil pressure sensor and switch for any visible damage
- Check the wiring and connectors for any signs of wear or corrosion
- Test the oil pressure sensor using a multimeter to ensure it is functioning correctly
How to fix DTC P0520 on BMW
To fix DTC P0520 on a BMW, you can try the following solutions:
- Replace the engine oil pressure sensor or switch if found faulty
- Repair any damaged wiring or connectors in the circuit
- Ensure the engine oil level is correct and of good quality
- Clear the fault code and reset the Check Engine Light
How to erase DTC P0520 on BMW
To erase DTC P0520 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s computer system. Once the code is cleared, the Check Engine Light should turn off. It is important to verify that the issue has been resolved by driving the vehicle and checking 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
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