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P0455 Diagnostic Trouble Code Discussion for February 2012

EVAP System Large Leak

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Trouble Ticket Help Requests for DTC P0455
Help Request Posted
2006 Scion tC 2.4L MIL Lamp on VIN: JTKDE17716
P0455: EVAP System Gross Leak Detected. Just wantedsom insite on this one. Found the tsb's for these codes and performed the test. Cleared codes and run evap test through scanner. Well it passed that test and the code did not return righ away. Keep in mind we smoked it befor we found the tsb's. Cust...
February 01, 2012
2005 Toyota Matrix 1.8L MIL Lamp on VIN: 2T1KR30E85
P0455: EVAP System Gross Leak Detected. Tank pressure sensor shows -3.69kpa with gas cap on or off. I have tested all 5 wires at LDP for resistance back to PCM,and the black/white to ground all show less than one ohm. With leak pump and sensor unpluged tank pressure reads -3.70kpa.I am using Launch ...
February 06, 2012
1999 Volvo S70 AWD 2.4L Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: YV1LT56DXX
P0455: EVAP Large leak detected. Cars killing me.. Customer states car will not start sometimes or starts very rough. It does start every time for us but after it starts just idles wierd. Not a vacuum leak though. Smoke test intake system and Evap system. If trying to accelerate almost acts a...
February 08, 2012
2005 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNDT13SX5
P0455: EVAP System Large Leak Detected. ... engine light on. Customer wanted it checked out because she was thinking of buying it. The person selling it said nobody could figure out why the light was on. It had a code P0455. I commanded The vent valve on and off with my scanner and I could hear it c...
February 10, 2012
2006 Volkswagen Jetta Value Edition 2.5L MIL Lamp on VIN: 3VWPG71KX6
P0455: large evap leak. After finding smoke from the evap tester bellowing out from the top of the fuel tank i removed the round access panel under the rear seat for a look. There I found smoke spewing from a single nipple on the top of the pump assembly. The white plastic nipple is ...
February 13, 2012