DTC P0523-00: Engine Oil Pressure Sensor System: High Input (PYUL)

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P0523: 00 (PCM (PYUL)) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Engine oil pressure sensor system: High input
Detection condition	Determination condition The specified period of time has elapsed while the engine oil pressure sensor voltage exceeds the standard. Precondition Battery voltage: 8-20 V
Fail-safe	Inhibits the engine torque or the maximum the engine speed. Inhibits engine-stop by i-stop control.
Vehicle status when DTCs are output	Not applicable
Repeatability verification procedure	Clear the DTC recorded in the memory. (See CLEARING DTC .) Perform the KOEO or KOER self test. (See DTC INSPECTION .)
Inspection/action procedure	Proceed with the inspection/action in the order from Step 1 below. After part repair or replacement, perform the repeatability verifi cation procedure and perform a DTCinspection. (See DTC INSPECTION ) If the DTC inspection indicates the same DTC again, go to the next step. Inspect the wiring harness (including connector/terminal) between the engine oil pressure sensor and the PCM. Purpose/reason (possible cause) Malfunction in wiring harness (including connector/terminal) between engine oil pressure sensor and PCM Referred to service information item (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .) Inspect the engine oil pressure sensor. Purpose/reason (possible cause) Engine oil pressure sensor malfunction Referred to service information item (See ENGINE OIL PRESSURE SENSOR INSPECTION .) Replace the PCM. Purpose/reason (possible cause) PCM malfunction (no other possible malfunction considered) Referred to service information item (See PCM REMOVAL/INSTALLATION )
Refer to SYSTEM WIRING DIAGRAMS . Courtesy of MAZDA MOTORS CORP.
1	PCM
2	Engine oil temperature sensor/engine oil pressure sensor (engine oil pressure sensor)
Function explanation (DTC detection outline)	Not applicable