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Old 12-16-2015, 01:43 PM   #1 (permalink)
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Default P0455 2008 Suzuki Forenza

Failed inspection due to p0455 code. Changed gas cap (aftermarket), reset battery and check engine came back on with same code. I am not a skilled mechanic, but I don't have several hundred $$$ to spend fixing every little problem. Car runs fine and I don't notice any difference since the light came on. Had 2 different people at AutoZone have done a basic check and they did not see any visible leaks and everything seemed to be hooked up properly. They suggested changing the evap canister, but weren't very confident that it would help and even talked me out of buying it at the time. I need to pass inspection soon due to an expired registration. What should be my next step?
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Old 12-24-2015, 10:46 PM   #2 (permalink)
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P0455 basically means that the tank pressure sensor located on the fuel pump has detected that the tank isnt maintaining desired pressure.A large leak.Therefore something connected to the tank such as but not limited to gas cap,tank pressure sensor,evap lines has gone bad and need replacing.If i were you id inspect all my evap lines since you already replaced cap.If all else fails replace the tank pressure sensor its pretty easy to replace.

Last edited by Optimistic; 12-24-2015 at 11:04 PM.
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