Check engine light comes on in wet conditions

New Topics Forums General Discussion 1999 – 2002 Nissan Quest Check engine light comes on in wet conditions

This topic contains 3 replies, has 4 voices, and was last updated by  QuestOnAVolcano 8 years, 9 months ago.

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    then goes back off when conditions go back to dry.

    2000 Quest.

    Any ideas?



    only way to help is to tell us what the codes are!

    goto autozone / advance autoparts for a free code scan



    My guess is you have bad wires or something in the ignition system that causes misfire, bad wires will do this in damp conditions and not in dry.



    I was living in Hilo the Big Island of Hawaii where it rains as compared to the other side which is dry Kailua-Kona. You can check under your cowl area under your engine hood, there is a rubber that suppose to seal water from getting into the engine bay. It could be something as simple as replacing the rubber or silicone the cowl screw holes. Check to see if you could see any rust around the EGR area. Water was splashing around my (Throttle Position Sensor),therefore giving my the Check Engine Light. Being Cheap & all used silicone from my closest auto store and the problem was fixed. Hope this helps.

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