P0522critical severityPowertrain

Engine Oil Pressure Sensor/Switch Low Input

on 1997 Chevrolet C30 7.4L V8 454 · RWD

What this code means

Low voltage from oil pressure sensor.

Symptoms

  • Low oil pressure reading
  • Warning light on

Common causes

  • Low actual oil pressure (DANGER)
  • Short to ground in circuit
  • Faulty sensor

Diagnostic steps

  1. IMMEDIATELY check oil level
  2. Test actual pressure with mechanical gauge
  3. Test circuit voltage
  4. Test sensor

Repair notes

If actual oil pressure is low, STOP ENGINE. If sensor fault, replace sensor.

Other Powertrain codes on this vehicle

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