said by briand069:Had you just filled up with gas prior to this code appearing? The code also could mean a plugged EVAP canister My parents have a Malibu that had a defect that caused liquid gas to carry into the EVAP can and casue the gas smell and a code. I can't remember exactly what casued the probelm thogh, but the dealer/shop thought he was topping off the tank which he wasn't.
And yes, a P0440 code does exist...
Nope. I'd filled up about 130 miles before the check engine light came on.