How to diagnos on 2003 Buick Rendezvous

P0453 code. No start but cranks. how do I checkfaulty fuel tank pressure sensor, open harness,or sure did or poor electrical connection. Brand new battery from AAA

by in Beltsville, MD on July 12, 2014
1 answer
ANSWER by , July 12, 2014
With an actual scanner , NOT a code reader. AND wiring diagram , multi-meter and patience. Go to the left side of repairpal page where it says 'encyclopedia' click on exhaust and emissions it ALL , before proceeding. It actually looks helpful and may be worth your while!