2001- Dodge Ram 1500- DTC P0445, P0442
Does anyone know exactly how I can troubleshhot the problems with these codes. I've already changed the gas cap after Autozone said the PO442 code showed up. A day later the light came back on. Replaced fuel cap again with no success in keeping the check engine light off. Then Autozone said there was a small leak and a big leak in the evaporative emissions system. These are the codes they pulled up today. I have a print-out from Auto Zone with very brief details on what the codes mean.
Does anyone know what I need to check or replace?
RE: Dodge Ram 1500 DTC P0445,P0442
AutoZone was incorrect. The codes stand for a leak in the evaporative system. Best thing to do is take it to a dealer or a trusted mechanic. The tubing can get extensive. You may want to look at a Tee connector next to the evaporater (Black can on left side of engine) these sometimes erode.