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P0440 Diagnostic Trouble Code Discussion for May 2010

General EVAP System Failure

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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
1998 Isuzu Trooper S 3.5L MIL Lamp on VIN: JACDJ58X0W
P0440: EVAP System Performance. ... light.CS was told previously at another shop he needed a gas cap. Had a new cap installed. Light went out for a few days then came back on. When vehicle came to the shop I was instructed to smoke test the evap. No leaks were found. At this time I went to A...
May 17, 2010
2004 Dodge Dakota SLT 3.7L MIL Lamp on VIN: 1D7GL42K54
P0440: General EVAP System Failure. ... came to me with codes p0440 and p0158. I smoke checked system checked ok so I replaced the nvlp assm. which local dodge dealer had 4 in stock thats a good sign put on and ran evap test on my modis and it failed with same code p0440. I checked purge valve t...
May 29, 2010