Engine Oil Pressure Sensor/Switch Circuit Range/Performance
Table of contents
P0521 PONTIAC Possible Causes
- Low oil level or motor mechanical fault
- Faulty Oil Pressure Sensor
- Oil Pressure Sensor harness is open or shorted
- Oil Pressure Sensor circuit poor electrical connection
How do I fix code P0521 PONTIAC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- There is a factory service bulletin for the following Pontiac models:
- 2007-2008 Pontiac Grand Prix
- 2008-2009 Pontiac G8
- Pontiac Factory Service Bulletin OBDII Code P0521
Cost of diagnosing the P0521 PONTIAC code
The cost of diagnosing the P0521 PONTIAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Oil pressure warning light ON.
P0521 PONTIAC Description
The Powertrain Control Module (PCM) continuously monitors the engine oil pressure. The Oil Pressure Sensor/Switch sends a signal to the PCM when the engine is running. The Diagnostic Trouble Code (DTC) P0521 is detected when the signal sent from the oil pressure sensor to PCM goes out of range.