I got this Check engine code P0180, and a member directed me to this thread. Looks like my problem is same as Steve Hutson's, need to replace the fuel shutoff valve.

M.B.Doc, your comment that many codes are emission related prompted me to ask this question. I just had the catalytic converter replaced one day before the light came on. Could that have something to do with the error code?

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RH

16 GLC300
12 C250
98 E300D
89 300SE
84 300SD sold