Hyundai
Oil pressure sensor reading out of range or not making sense. Check the real oil level and pressure before fitting a sensor.
P0521 fault code: what it means
P0521: Oil pressure reading is out of range. Could be a sensor fault or real low oil pressure, which can wreck the engine.
Usual causes, most likely first
- faulty oil pressure sensor or switch
- low oil level or wrong oil grade
- blocked oil pick-up or sludge
- worn oil pump
P0521 by make
What the repair usually costs
- CVT valve body replacement (remanufactured, in car)NZ$1,280–NZ$2,420 · A$1,200–A$2,400
- Parking sensor replace, one sensorNZ$130–NZ$520 · A$130–A$510
Not sure what P0521 means on your car? Ask Credov.
Before you clear it
Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.
Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.