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P0440 Diagnostic Trouble Code Discussion for December 2012

General EVAP System Failure


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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
2001 Toyota Echo 1.5L Evap not ready VIN: JTDBT12321
P0440: EVAP Control System Large Leak Detected. I replaced evap canister, which includes evap vent close valve after finding it had some seapage. Checked evap purge valve. Seems to be operatoring properly. Pressure sensor reading what it should be according to Alldata. I'm now having a problem getting it re...
December 05, 2012
1997 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP52K9V
P0440: EVAP System Malfunction. Vehicle came back with the same code, po440.., went through the hoops again.., no leaks.., and caister valve is grounded at all times again. I know this is limited information.., but i know how majority of evap systems function., i know when purge occurs, ther...
December 06, 2012
2000 Lexus RX300 3.0L MIL Lamp on VIN: JT6HF10U0Y
P0440: Evap leak detected. Car came in for P0440. I smoke tested, found a leak via flow meter on Red Line smoke machine. Could smell fuel near fuel tank. Dropped tank, couldn't see leak via smoke. Pulled tank and isolated. No flow on machine, no leak. Tested lines, canister and filler n...
December 12, 2012
2001 Toyota Echo 1.5L Evap not ready VIN: JTDBT12321
P0440: EVAP Control System Large Leak Detected. I replaced evap canister, which includes evap vent close valve after finding it had some seapage. Checked evap purge valve. Seems to be operatoring properly. Pressure sensor reading what it should be according to Alldata. I'm now having a problem getting it re...
December 05, 2012
1997 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP52K9V
P0440: EVAP System Malfunction. Vehicle came back with the same code, po440.., went through the hoops again.., no leaks.., and caister valve is grounded at all times again. I know this is limited information.., but i know how majority of evap systems function., i know when purge occurs, ther...
December 06, 2012
2000 Lexus RX300 3.0L MIL Lamp on VIN: JT6HF10U0Y
P0440: Evap leak detected. Car came in for P0440. I smoke tested, found a leak via flow meter on Red Line smoke machine. Could smell fuel near fuel tank. Dropped tank, couldn't see leak via smoke. Pulled tank and isolated. No flow on machine, no leak. Tested lines, canister and filler n...
December 12, 2012