I have a Nissan. Altima 2002 showing codes of p0507 idle air control system rpm higher than expected p0455 evaporative emissions system leak and p01456 evap system very small leak. It has a humming noise to it kinda smells like something burning
have the same problem?
Sunday, July 1st, 2012 AT 5:05 PM
You don't need to post so many questions at one time.
The EVAP system ahs a leak somewhere and it can be due to a loose gas cap. As to the P0507, it can be caused by the EVAP system codes.