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Code p0442 refers to Evaporative emission system --- small leak detected Possible cause ---hose connections---intake leak EVAP canister----EVAP canister purge valve. I would check the purge valve first.
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You erase the engine light by fixing the problem . With every DTC - diagnostic trouble code there are diagnostic flow chart's , steps to find the problem .
DTC P0442 : Evaporative Emission (EVAP) System Small Leak Detected
A code P0442 most likely means one or more of the following has happened: 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 Defective vent valve Defective purge valve Defective leak detection pump
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