2 codes one headache!
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Junior User
Joined: Aug 2007
Posts: 84
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From: Ferndale, WA
2 codes one headache!
ok so i posted this problem earlier but my check engine light came on. i went to autozone to pull the codes and i got 2 codes, an older one that was the P0401 and the newer one is P0402. so as you can see they conflict.im thinking that the EGR valve is possibly stuck or the cylinoid is not working and is not moving the valve? i am going to do a fuel system clean at a shop and hope it kicks loose anything thats stuck in there. Any other suggestions?
