P0523
Engine Oil Pressure Sensor/Switch High Voltage
OBD-II
Sensors
What it means
The oil pressure sensor is reading high. Verify actual pressure with a mechanical gauge before replacing anything — a sensor fault and genuinely low oil pressure look similar on a scan tool and only one of them is urgent.
Seeing P0523?
Get the full picture for your car — whether it's safe to drive, what the repair costs, and what to tell the shop.
Check your car freeRelated codes
P0070
Ambient Air Temperature Sensor Circuit
SensorsLow
P0071
Ambient Air Temperature Sensor Range/Performance
SensorsLow
P0072
Ambient Air Temperature Sensor Circuit Low
SensorsLow
P0073
Ambient Air Temperature Sensor Circuit High
SensorsLow
P0110
Intake Air Temperature Sensor Circuit
SensorsLow
P0111
Intake Air Temperature Sensor Circuit Range/Performance
SensorsLow
P0112
Intake Air Temperature Sensor Circuit Low
SensorsLow
P0113
Intake Air Temperature Sensor Circuit High
SensorsLow
General reference only — what a code means can vary by make and model. Confirm with a qualified technician.