Small leak Gas Cap code help - Been getting this code off and on for the past few months now. I know it is definitely not the gas cap. Any ...

tmurph01 · by **tmurph01** [OP] » Dec 10 2011, 1:15am

Been getting this code off and on for the past few months now. I know it is definitely not the gas cap. Any advice on what else to check out or any advice on the most common problem associated with this code..

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Giovanni · by **Giovanni** » Dec 11 2011, 8:40am

Here's what I got with a quick google search: http://www.obd-codes.com/p0442

A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
A small leak/hole in a fuel vapor hose/tube
Other small leak in EVAP system
Faulty vent o-ring seal

the most common repair is to:
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, or
Inspect the EVAP system for cuts/holes in tubes/hoses

Small leak Gas Cap code help - Been getting this code off and on for the past few months now. I know it is definitely not the gas cap. Any ...

Code P0442 on 2009 Silverado

Code P0442 on 2009 Silverado

Re: Code P0442 on 2009 Silverado

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