Question about 2004 Cadillac Deville

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Code po171 caddy 2004 deville - 2004 Cadillac Deville

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  • roytheman Oct 25, 2008

    Actually I had a plenum chamber gasket that was leaking. Replaced gasket and problem solved.

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  • 231 Answers

This code is to inform you that your fuel mixture on bank 1 is set or running to lean.

Posted on Oct 24, 2008

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2004 cadillac deville engine idle races and stalls


Is your check engine light on while your driving? If it is get a hold of a scran tool to find out what codes are showing.Or most auto parts supply stores have one end will check it for codes, Most of them don,t charge to check it out for you.

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Aug 03, 2012 | 2004 Cadillac Deville

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Lean bank 1&2,have replaced intake gaskets and throttle body seal,new fuel pump,still sets po171,po174 codes-help


Did you Erase the diagnostic trouble codes after the repairs were made? If not then they will keep coming back on screen as stored trouble codes untill they are removed from the computers Memory.If you did Erase the codes then you need to disconnect the possitive battery terminal this will reset the computer. Good Luck.

Dec 11, 2010 | 2004 Cadillac Deville

1 Answer

When to check brakes?


In my opinion You should check the brakes at least every year (or 100k miles), to be safe.

Jan 24, 2009 | 2004 Cadillac Deville

1 Answer

Have trouble codes in my car


call your local caddy dealer and tell them what the codes are in the service department... they will probably tell you what you need to do or at least clarify what they mean good luck ray

Jan 17, 2009 | 1995 Cadillac DeVille

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