Details On DTCs

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DTC P055F:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE

Description	Engine oil pressure malfunction
Detection condition	Determination conditions	If any of the following conditions is met under condition A or condition B: Condition A: The actual hydraulic pressure is extremely high for a continuous 10 s even if the PCM commands low hydraulic pressure. Condition B: The actual hydraulic pressure is extremely low for a continuous 10 s even if the PCM commands high hydraulic pressure.
	Drive cycle	2
	Self test type	CMDTC self test
	Sensor used	Engine oil pressure sensor
Fail-safe function	Condition A: Not applicable. Condition B: Restricts the upper limit of the engine speed. PCM restricts engine torque.
Vehicle status when DTCs are output	The engine could be damaged due to an engine hydraulic pressure malfunction.
Possible cause	Engine oil leakage Improper engine oil level Oil strainer clogging Engine oil temperature sensor/engine oil pressure sensor connector or terminals malfunction PCM connector or terminals malfunction Short to ground in any of the following engine oil pressure sensor circuits. Power supply circuit Signal circuit Ground circuit Open circuit in any of the following engine oil pressure sensor circuits. Power supply circuit Signal circuit Ground circuit Short to power supply in any of the following engine oil pressure sensor circuits. Power supply circuit Signal circuit Ground circuit Short circuit between any of the following engine oil pressure sensor circuits. Power supply circuit Signal circuit Ground circuit Engine oil pressure sensor malfunction Engine oil solenoid valve malfunction Oil pump malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.