whats these codes mean p0507 p0455 p01456

2002 NISSAN 180SX
103,000 MILES
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NICKBYYJ
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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
Jul 1, 2012 at 5:05 PM
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KHLOW2008
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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.



Jul 1, 2012 at 5:15 PM