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P0440 Diagnostic Trouble Code Discussion for September 2009

General EVAP System Failure

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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
1997 Isuzu Rodeo S 3.2L MIL Lamp on VIN: 4S2LM58V43
P0440: EVAP System Performance. First did smoke test. No signs of any leaks.We have replaced the vent solenoid and purge solenoid on previous repairs. We found vent sol. stuck on with key in run position. Traced back to computer. replaced computer. still reset light. dont have scan tool that...
September 01, 2009
2000 Oldsmobile Alero GLS 3.4L MIL Lamp on VIN: 1G3NL12E7Y
P0440: EVAP System No Flow During Purge. ... throws the P0440 code after replacing the purge valve and degraded/collapsed line going to it. Smoke tested many times perfectly by actuating vent control solenoid via ECM, sealed tight. Replaced original fuel cap after hearing a sucking noise when applyin...
September 04, 2009
1999 Subaru Forester L 2.5L Can't Add Fuel VIN: JF1SF6354X
P0440: EVAP System Performance. This car came in with a PO440 Evap leak. Tested the cap, smoke test Evap system. No condition found. After testing and returning the vehicle, the customer complained that they can't get fuel into the tank. What could have possibly changed in testing to make th...
September 15, 2009