DTC P0522-00: Engine Oil Pressure Sensor Circuit Low Input: Outline

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0522:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Engine oil pressure sensor circuit low input
Detection condition	If the input voltage at the PCM terminal 1AS is less than 0.12 V for 2 s, the PCM determines that the engine oil pressure sensor circuit is low. Precondition Battery voltage: 8-20 V 0.5 s have elapsed after the ignition was switched ON (engine off or on)
Fail-safe	Limits the engine torque or the upper limit of the engine speed.
Possible cause	Engine oil temperature sensor/engine oil pressure sensor connector or terminals malfunction Short to ground in any of the following engine oil pressure sensor circuits. Power supply circuit Signal circuit PCM connector or terminals malfunction Short circuit in engine oil pressure sensor signal circuit and ground circuit Open circuit in engine oil pressure sensor power supply circuit Engine oil pressure sensor malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.