P0520 — Engine Oil Pressure Sensor Circuit Malfunction
| Meaning | The engine control unit has detected an abnormal voltage signal from the engine oil pressure sensor or its circuit. This means the computer is not receiving reliable data about the oil pressure inside your engine. |
| Family | Powertrain (P) |
Typical symptoms
Engine oil pressure gauge reads incorrectly or drops to zero
Check Engine Light is on
Common causes
Corraded, damaged, or loose electrical connector or wiring
Internal engine mechanical issues affecting oil pressure
What to do
Frequently asked questions
What does code P0520 mean?
Engine Oil Pressure Sensor Circuit Malfunction. The engine control unit has detected an abnormal voltage signal from the engine oil pressure sensor or its circuit. This means the computer is not receiving reliable data about the oil pressure inside your engine.
Can I keep driving with code P0520 active?
No: stop the vehicle and call a technician
Common causes — P0520
Faulty engine oil pressure switch or sensor Corraded, damaged, or loose electrical connector or wiring Internal engine mechanical issues affecting oil pressure
How do you fix code P0520?
Do not ignore this warning, as proper oil pressure is critical for engine survival. Check the oil level first, and have a mechanic inspect the sensor wiring and test the actual oil pressure with a manual gauge as soon as possible.
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