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P0455 Diagnostic Trouble Code Discussion for June 2009

EVAP System Large Leak

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Trouble Ticket Help Requests for DTC P0455
Help Request Posted
2004 Jeep Wrangler Sport 4.0L MIL Lamp on VIN: 1J4FA49S64
P0455: EVAP System Large Leak (0.080") Detected. ... the p0455 set after the customer drove it only 86 miles since last repair. attached smoke machine to test port, and disconnected purge solenoid connector. gross leak. grounded pcm terminal 10 on c3 connector (ldp solenoid). no leaks found. removed ground f...
June 09, 2009
2001 Mitsubishi Galant LS 3.0L MIL Lamp on VIN: 4A3AA56H71
P0455: EVAP Control System Very Large Leak (0.080") Detected. check vacuum hoses to canister purge valve and from canister to vent valve all ok check voltage supply to vent valve 12v supply voltage to vent valve and ground does not click is this a problem do not have a scan tool to test valve through pcm any help would b...
June 26, 2009