Diagnostic Aids

WARNING: This page is about a different car, the 2003 Pontiac Grand Am, 2003 Oldsmobile Alero, 2003 Chevrolet Monte Carlo, and 2003 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

The EVAP system tests run when the engine is first started and meets the DTC. An intermittent condition could be caused by an improperly installed or damaged EVAP canister purge solenoid, or by a temporary blockage in the EVAP canister purge solenoid.
For intermittent conditions, go to INTERMITTENTS in TROUBLE SHOOTING - NO CODES - 3.4L ALERO, GRAND AM, IMPALA & MONTE CARLO article.