faults comes automaticaly after some time ago

Question

when we reset this code this code apear after some time ago

Answer 1

Depends on the vehicle especially the year make and model. P0021 is when the camshaft position is over advanced, and this code is set mostly do to the camshaft solenoids, P0327 in a 2003 depending on the make and model , it may have been set when the variable timing is offset.