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P0455 Diagnostic Trouble Code Discussion for July 2011

EVAP System Large Leak

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Trouble Ticket Help Requests for DTC P0455
Help Request Posted
2005 Pontiac Montana 3.4L No Start, Cuts out VIN: 1GMDV23E65
P0455: EVAP Vent Large Leak (0.080" Detected. ... Customer stopped for a bag of bagels and vehicle would not start after numerous attempts. When AAA showed up it started and he drove to my shop. I was able to start it only after numerous attempts. The first set of codes were in there for 6600 miles - cus...
July 05, 2011
2004 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNDT13S84
P0455: EVAP System Large Leak Detected. This vehicle came in for SES light no driving concerns. Unit was not getting up to temp, replaced thermostat to get temp upto spec, t-stat was visibly stuck open. Tested and replaced secondary air pump shutoff valve-ok. Now the big problem we are having is tha...
July 07, 2011
2006 Mazda 5 Sport 2.3L Cuts out, Stall VIN: JM1CR29346
P0455: EVAP System Gross Leak Detected. ... refuel the tank when she starts the engine engine starts and stalls starts again with some difficulties and hesitation after thats runs good and starts good until tank is refill again. I scan for codes and only P0455 code shows up. made smoke test and chan...
July 17, 2011
2006 Mazda 3 S 2.3L MIL Lamp on VIN: JM1BK14346
P0455: EVAP System Gross Leak Detected. ... found codes P0455 and P2187. Basic testing on common area on intake leak and pcv hose are ok. Remove purge valve and found valve stuck open. Replace and sent customer on his way. Come back 1 day later,same codes. Recheck purge valve, stuck open again. Repl...
July 25, 2011