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P0440 Diagnostic Trouble Code Discussion for April 2011

General EVAP System Failure

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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
2001 Toyota Corolla CE 1.8L MIL Lamp on VIN: 1NXBR12E71
P0440: EVAP Control System Large Leak Detected. i have a corolla, po440 . the thing i dont get, is , i smell gas fumes at tank area when presserd up with smoke mac. but no smoke??? new can assy also. pulled tank and pressured it seprate. ok. each line seprate, ok. ccv, ok. vsv at intake ok. when i pinch off...
April 06, 2011
2001 Chevrolet S10 Xtreme 2.2L MIL Lamp on VIN: 1GCCS14511
P0440: EVAP System Malfunction. This vehicle came in with a code P0440 found gas cap o-ring very cracked up - Replaced w/OE, and cleared codes. Returned 3 days later with same code P0440 EVAP sys. fault. Started Mitchelle DTC P0440 flow chart, Visually good, tested purge and vent solenoid/va...
April 15, 2011
1998 Buick Century Limited 3.1L MIL Lamp on VIN: 2G2WY52M9W
P0440: EVAP System No Flow During Purge. Car came in with below codes, checked scan data and fuel trims -25% to -30%. Checked usual fuel pressure regulator-ok, pulled PCV and plugged. Still high. Then found in scan data that purge valve was at 20%. I unplugged purge valve connector and fuel trims cam...
April 25, 2011