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I have a Matco scanner and it will not clear code. I did try disconnecting the battery, still did not clear. Gas cap rerplaced and purge valve replaced. I think it may have a bad ecm. Any help will be appreciated.

Vehicle: 2004 hyundai santa fe 2.7l engine

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The P0455 code means that there is a large EVAP system leak on the system, it's possible that you still have a large leak after you replaced those parts. Check for loose or damaged hoses. The code won't clear until you fix the problem.

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asked Feb 16, 2017 by David E. Shackford

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