Details On DTCs

DTC P0100:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE

Description	Mass air flow sensor circuit performance problem
Detection condition	Determination conditions	Any one of the following conditions is met: The MAF sensor/IAT sensor No. 1 determines an internal malfunction itself and the PCM receives error signals from the MAF sensor/IAT sensor No. 1 for 5 s. The PCM receives a value other than the preset standard for the output value from the MAF sensor for 5 s.
	Preconditions	Engine speed: 500 rpm or more^1 The following DTC is not detected: MAF sensor/IAT sensor No. 1: U060F:00 ^1 : Standard can be verified by displaying PIDs using M-MDS
	Drive cycle	1
	Self test type	CMDTC self test, KOEO self test, KOER self test
	Sensor used	MAF sensor/IAT sensor No. 1
Fail-safe function	Restricts the upper limit of the engine speed. Inhibits the evaporative purge control.
Vehicle status when DTCs are output	Rough idling, poor acceleration, stalling
Possible cause	MAF sensor/IAT sensor No. 1 incorrect installation MAF sensor/IAT sensor No. 1 connector or terminals malfunction PCM connector or terminals malfunction Short to ground in any of the following MAF sensor/IAT sensor No. 1 circuits. Power supply circuit Signal circuit Open circuit in any of the following MAF sensor/IAT sensor No. 1 circuits. Power supply circuit Signal circuit Ground circuit Short to power supply in MAF sensor/IAT sensor No. 1 signal circuit Short circuit between any of the following MAF sensor/IAT sensor No. 1 circuits. Power supply circuit Signal circuit Ground circuit MAF sensor/IAT sensor No. 1 malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.