P0521
Engine Oil Pressure Sensor/Switch A Range/Performance
P0521 is an OBD-II diagnostic trouble code meaning: Engine Oil Pressure Sensor/Switch A Range/Performance. Common causes: faulty oil pressure sensor, open or short circuit in wiring harness. Estimated repair cost: $17–56.
Symptoms
- Oil pressure warning light is on
- Unstable engine operation
- Power drop
Causes
- Faulty oil pressure sensor
- Open or short circuit in wiring harness
- Low oil level
- Contaminated oil
- Oil pump problems
How to Fix
- Check the oil level and condition
- Visually inspect the sensor wiring harness
- Test the oil pressure sensor
- Replace sensor if necessary
- Check the operation of the oil pump
Related codes
Error P0521 by Vehicle Brand
FAQ
What does the P0521 code mean?
P0521 is an OBD-II diagnostic trouble code that indicates: Engine Oil Pressure Sensor/Switch A Range/Performance
What causes a P0521 error code?
The most common causes of P0521 include: Faulty oil pressure sensor; Open or short circuit in wiring harness; Low oil level; Contaminated oil.
How do I fix a P0521 diagnostic trouble code?
To fix P0521: Check the oil level and condition. Visually inspect the sensor wiring harness. Test the oil pressure sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0521?
Limited driving only, diagnose soon
How much does it cost to fix P0521?
The estimated repair cost for P0521 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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