What does code P0522 mean?

Q: What does code P0522 mean?

Engine Oil Pressure Sensor/Switch Circuit Low Voltage. P0522 means the engine control module (ECM) has detected a low voltage signal on the engine oil pressure sensor circuit, typically below the expected range for the current engine conditions. The ECM compares the sensor's output to a calculated model and flags this code when the signal stays too low for a set period, indicating a possible short to ground, faulty sensor, or wiring issue.

DTC codes / P05xx · Vehicle speed, idle control and auxiliary inputs / P0522

P0522Engine Oil Pressure Sensor/Switch Circuit Low Voltage

P0522 means the engine control module (ECM) has detected a low voltage signal on the engine oil pressure sensor circuit, typically below the expected range for the current engine conditions. The ECM compares the sensor's output to a calculated model and flags this code when the signal stays too low for a set period, indicating a possible short to ground, faulty sensor, or wiring issue.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.