P0455 - Evaporative Emission Control System Leak Detected (gross leak)
This is the code that everyone associates with a loose gas cap, but there are a lot of other possibilities. Start with a visual examination of the hoses and clamps. If you don't see anything obvious, your mechanic will use a smoke machine to inject a white, non-toxic smoke at 2 psi, then watch where it sneaks out.
Tuesday, October 13th, 2015 AT 7:14 PM