Engine Error
P0520
Engine Oil Pressure Sensor/Switch Circuit
Severity
Medium
Symptoms
Oil pressure light on, erratic oil pressure gauge, check engine light
Common Causes
- Faulty oil pressure sensor
- Low engine oil level
- Wiring issue to the sensor
- Actual low engine oil pressure (failing pump)
How to Fix
- 1 Check engine oil level immediately
- 2 Replace oil pressure sensor
- 3 Inspect and repair wiring connector
- 4 Perform manual oil pressure test
Estimated Repair Cost
USD
$80
–
$800
Sensor replacement: $100 - $250; Oil pump (worst case): $800+