Error code

OBD2 P0522

OBD2P0522
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Engine Oil Pressure Sensor/Switch Low Voltage.

Severity

highNot recommended. The engine may shut down to prevent damage.

Summary

P0522 indicates a low voltage signal from the engine oil pressure sensor/switch. This can suggest either an actual low oil pressure condition or issues with the sensor's wiring and circuit.

Symptoms

  • Illuminated warning light
  • Engine may shut down due to low oil pressure (code P2105 also present)
  • Mechanical noises like ticking, thudding, knocking, or rumbling sounds
  • Engine misfires

Common Causes

  • Defective oil pressure switch
  • Damaged wiring and connectors
  • Use of unsuitable engine oil
  • Poor maintenance (e.g., not changing oil regularly)
  • Excessive mechanical wear in the engine
  • Failed internal engine components like oil pump or valve lifters

Diagnosis

  1. Check and replace faulty wiring and connectors
  2. Verify correct oil level and condition
  3. Test the actual oil pressure using a dedicated gauge
  4. Inspect for mechanical issues like worn components

Fixes

  • Replace defective oil pressure switch

FAQ

Can I drive with P0522?

Not recommended. The engine may shut down to prevent damage.

What causes low voltage in the oil pressure sensor?

Common causes include a faulty sensor, damaged wiring, or actual low oil pressure due to mechanical issues.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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