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 Related P0021 code
2009 MAZDA TRIBUTE Power Train:automatic Transmission:control Module (tcm, Pcm)
2009 MAZDA TRIBUTE Equipment:other:owners/service/other Manual