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		986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical Chat
CEL code P0440.. ?

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05-07-2016, 10:41 AM	#1
Gilles Registered User Join Date: Dec 2009 Location: Orange County, CA Posts: 1,955	CEL code P0440.. ? one week ago I got a CEL with the code P0440 (Fuel tank ventilation system), which I erased with the Durametric but a week later (yesterday) it returned but with an additional code # P0431 (Bank 2 catalyst warm up below threshold... I looked up the PET and found out the P/N 997 201 251 00 (now 01) but the part cost $432... how can I check if this is the real cause for the code P0440 before buying an expensive part..? . Last edited by Gilles; 05-07-2016 at 10:52 AM.

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