P0520 fault code: what it means

P0520: Engine oil pressure sensor / switch circuit fault. Check real oil pressure before driving.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

failed oil pressure sensor or switch
oil-soaked or corroded connector
damaged wiring
real low oil pressure

P0520 by make

Jeep

Engine oil pressure sensor/switch circuit. On 3.6 Pentastar the sensor in the oil filter housing commonly fails and leaks.

Usual causes: failed oil pressure sensor; sensor connector or wiring; oil filter housing leak affecting sensor

What the repair usually costs

CVT valve body replacement (remanufactured, in car)NZ$1,280–NZ$2,420 · A$1,200–A$2,400
Oil cooler / oil filter housing gasket or housingNZ$330–NZ$1,330 · A$360–A$1,360

Not sure what P0520 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.