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P0455 Diagnostic Trouble Code Discussion for February 2010

EVAP System Large Leak


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Trouble Ticket Help Requests for DTC P0455
Help Request Posted
2001 Volkswagen Cabrio GL 2.0L MIL Lamp on VIN: 3VWBC21V01
P0455: Gross evap leak. Dear fellow techs thank you for your time. I have leak tested and found no leaks except at the tank vent with engine on or off.I can manuel activate shut vent valve but it doesnt have a ground signal to shut vent .When should the vent shut solenoid operate.My ...
February 04, 2010
2006 Chevrolet Trailblazer LT 4.2L MIL Lamp on
P0455: EVAP System Large Leak Detected. Vehicle came in for a MIL. Diagnosed and replaced faulty evap vent solenoid. customer returns with MIL on again. This time it has a p0171 system lean. Intake was removed and inspected for vac leaks and cracks(none found) and reinstalled with new gaskets. Throt...
February 17, 2010
2001 Volkswagen Cabrio GL 2.0L MIL Lamp on VIN: 3VWBC21V01
P0455: Gross evap leak. Dear fellow techs thank you for your time. I have leak tested and found no leaks except at the tank vent with engine on or off.I can manuel activate shut vent valve but it doesnt have a ground signal to shut vent .When should the vent shut solenoid operate.My ...
February 04, 2010
2006 Chevrolet Trailblazer LT 4.2L MIL Lamp on
P0455: EVAP System Large Leak Detected. Vehicle came in for a MIL. Diagnosed and replaced faulty evap vent solenoid. customer returns with MIL on again. This time it has a p0171 system lean. Intake was removed and inspected for vac leaks and cracks(none found) and reinstalled with new gaskets. Throt...
February 17, 2010