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P0440 Diagnostic Trouble Code Discussion for July 2011

General EVAP System Failure

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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
2000 Buick Regal LS 3.8L MIL Lamp on VIN: 2G4WB52K8Y
P0440: EVAP System Malfunction. This vehicle has had a reoccuring P0440 code. The owner has had the Purge valve, vent valve and filler neck replaced but states the code keeps coming back. I confirmed the P0440 code and did a Evap leak/smoke test and found no leaks. Here is how I performed t...
July 15, 2011
2004 Jeep Liberty Limited 3.7L MIL Lamp on VIN: 1J4GL5874W
P0440: General EVAP System Failure. cannot seem to nail this one down ...found faulty nvld first time around and cockily called it fixed even though i wasnt able to run evap monitor. admittedly threw a gas cap at it on 5:00 on friday when cust showed up with mil on again and hoped for the best.i...
July 15, 2011