obd II check engine light [Archive] - GrandAmGT.com Forum


View Full Version : obd II check engine light

11-04-2005, 02:21 PM
on my '96 gagt 4dr with the V6(91,000 miles).......check engine light keep popping up....code p0440, autozone say its the gas cap, purchase one and plm still there. had all the hoses checked for leaks, none found. now i'm thinkin bout way to just reset this dang light myself, any idea short of buying a scan tool???

11-04-2005, 06:22 PM
Unplug the batterry and leave it unplugged for like 45 minutes to an hour

11-05-2005, 01:29 PM
If they didn't clear the code it will still be there for a few days.

I replaced my gas gap about a year ago, and recently was getting 2 of that code. It was always 2, not just 1. Turns out there was a little piece of hose that wasn't staying on. Replaced it and haven't had any codes since.

They probably sold you a generic cap, that might not fit exactly the same. The one I have has a different feel to it, if you push too hard or not hard enough while turning, it won't seal. AFAIK they don't carry ones specifically for our car in most parts stores.