error codes p0455, p0442, p0170, p0173
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error codes p0455, p0442, p0170, p0173
my 1997 e420's engine light came on the other day, I bought a obdcom reader and these were the error codes given back to me. My question is how do I fix this problem and how major of a problem is it. I did a little research and Im pretty sure it is not my gas cap...any help is greatly appreciated
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