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P0440 Diagnostic Trouble Code Discussion for December 2007

General EVAP System Failure

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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
1996 Pontiac Grand Am SE 2.4L MIL Lamp on VIN: 1G2NE12TXT
P0440: EVAP System No Flow During Purge. ... with a p0440 and p1601. p0440 keeps comming back at first start up at idle or driving.i check both purge and vent solenoids,both are operating fine.pressure tested the system and held prssure good, no leaks at all. i can actuate the vent solenoid and apply...
December 18, 2007
1999 Toyota Tacoma Pre Runner 2.7L MIL Lamp on VIN: 4TASM92N5X
P0440: EVAP Control System Large Leak Detected. hi all, thanks for your time. have a P0440 on this that is killing me. tested for leaks with evap pressure tester. no leaks found. monitored voltage at pressure sensor with fluke98 while commanding solenoids on with snap on scanner, voltage drops for a few sec...
December 18, 2007