Still getting codes P0455 and P0442. I've replaced the Leak Detection Pump, Vent Valve, Oxy Sensors, fuel filler hose, crankcase tube, air temp sensor and OEM gas cap...all hoses checked and no cracks found...taking my 2002 DGC to dealer
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did you replace the plastic clamps with metal hose clamps? as for me when my was throwing all those codes. and i replaced the little hose under the air box. all the hoses on the leak detection pump under the steering rack by the charcoal canister.(really hard to get too) were swollen from power steering fluid leaking down on it. and it busted the plastic caps enough to throw the code. i replaced all my plastic caps. and that one hose.. haven't had the code come back in almost a year now..