P0520
Engine Oil Pressure Sensor/Switch A Circuit
P0520 is an OBD-II diagnostic trouble code meaning: Engine Oil Pressure Sensor/Switch A Circuit. Common causes: oil pressure sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $33–111.
Symptoms
- Check Engine Light Is On
- Unstable engine operation
- Power reduction
- Engine noise due to insufficient oil pressure
Causes
- Oil pressure sensor malfunction
- Open or short circuit in wiring harness
- Poor contact in the sensor connector
- ECU malfunction
How to Fix
- Check the oil level and condition
- Inspect the wiring harness and sensor connectors
- Check the resistance of the oil pressure sensor
- Replace sensor if necessary
- Clear the error code and check if it returns
Related codes
Error P0520 by Vehicle Brand
FAQ
What does the P0520 code mean?
P0520 is an OBD-II diagnostic trouble code that indicates: Engine Oil Pressure Sensor/Switch A Circuit
What causes a P0520 error code?
The most common causes of P0520 include: Oil pressure sensor malfunction; Open or short circuit in wiring harness; Poor contact in the sensor connector; ECU malfunction.
How do I fix a P0520 diagnostic trouble code?
To fix P0520: Check the oil level and condition. Inspect the wiring harness and sensor connectors. Check the resistance of the oil pressure sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0520?
Limited driving only, diagnose soon
How much does it cost to fix P0520?
The estimated repair cost for P0520 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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