P0521 OBD II Trouble Code Engine Oil Pressure Sensor/Switch Range/Performance DTC

Detailed troubleshooting and repair information a P0521 code which is an oil pressure problem with the engine. The cause could either be mechanical - not enough pressure, or electrical meaning the sensor or wiring.

Symptoms of P0521 OBD II Trouble Code

Oil pressure gauge reading low or high
Oil pressure indicator lamp illuminated

Common Causes of P0521 OBD II Trouble Code

Low oil level in the engine
Old dirty oil (overdue for an oil change)
Low oil pressure
Faulty wiring or connection/connector in the oil pressure sender circuit
Faulty oil pressure sender/sensor

P0000 OBD II Trouble Code No Diagnostic Trouble Codes Found

P0001 OBD II Trouble Code DTC Fuel Volume Regulator Control Circuit/Open

P0002 OBD II Trouble Code DTC Fuel Volume Regulator Control Circuit Range/Performance

P0003 OBD II Trouble Code DTC Fuel Volume Regulator Control Circuit Range/Performance

P0004 OBD II Trouble Code DTC Fuel Volume Regulator Control Circuit Range/Performance

P0005 OBD II Trouble Code DTC Fuel Shutoff Valve A Control Circuit/Open

P0006 OBD II Trouble Code DTC Fuel Shutoff Valve A Control Circuit Low

P0007 OBD II Trouble Code DTC Fuel Shutoff Valve A Control Circuit High

P0008 OBD II Trouble Code Engine Positions System Performance Bank 1

P0009 OBD II Trouble Code Engine Positions System Performance Bank 2