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P0440 Diagnostic Trouble Code Discussion for March 2008

General EVAP System Failure

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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
2002 Chevrolet Impala 3.4L MIL Lamp on VIN: 2G1WF52EX2
P0440: EVAP System No Flow During Purge. ... #P0442. Performed EVAP smoke test and initially could not find any source of leaks. Confirmed with Tech 2 scanner that vehicle's EVAP system is not holding vacuum. After further testing found vent solenoid is sticking and therefore replaced solenoid. Retes...
March 06, 2008
1999 Chevrolet Monte Carlo 3.8L No Start
P0440: EVAP System No Flow During Purge. we have no spark but injector pulse and fuel pressure. 2 different ign modules installed, good power and groud. good crank sensor ( 3x and 18x signal), cam sensor good (inj pulse sync through pcm only, not spark control). put new crank sensor in anyway, tone w...
March 17, 2008