Possible causes
– Variable camshaft timing actuator stuck in advance position
– Timing belt jumped
– Timing belt jumped
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Lack/Loss of power
– Engine rough idle
– Lack/Loss of power
– Engine rough idle
MAZDA Technical Service Bulletins for P0021 code
2009 MAZDA TRIBUTE POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
2009 MAZDA TRIBUTE EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL