P0523 OBD II Trouble Code Engine Oil Pressure Sensor/Switch High Input Code

Detailed troubleshooting and repair information a P0523 code which is an oil pressure sensor high input. Generally this is an electrical or sensor fault.

Symptoms of P0523 OBD II Trouble Code

  • Oil pressure gauge reading high
  • Oil pressure indicator lamp illuminated

Common Causes of P0523 OBD II Trouble Code

  • High oil pressure (mechanical oil pump fault)
  • High pressure due to obstruction/restriction in oil passage(s)
  • Wrong engine oil used
  • Faulty wiring or connection/connector in the oil pressure sender circuit
  • Faulty oil pressure sender/sensor