What does code P0520 mean?
A malfunction is detected in the engine oil pressure sensor or switch circuit.
OBD-II Code
P0520 — Engine Oil Pressure Sensor/Switch Circuit Malfunction
A malfunction is detected in the engine oil pressure sensor or switch circuit.
Common symptoms
- Intermittent oil warning light
- incorrect oil pressure indication
Possible causes
- Faulty oil pressure sensor
- wiring intermittency
- dirty or degraded oil
Initial recommendation
Inspect oil pressure sensor, verify actual oil pressure and check wiring integrity.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0520 with your vehicle's actual symptoms for more complete diagnostic guidance.
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