Truck threw 3 codes

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massivespl

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First one

C0281 stop lamp switch circuit
P0171 bank 1 system to lean
P0174 bank 2 system to lean


What's wrong with my truck. She still runs like a champ
 

cmc76

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the lean codes are likely your intake gaskets. Mine throws that code if its under about 35 degrees. runs fine, im waiting for warm temps to repair.
 

Martinjmpr

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Very common problem. There is a TSB on the intake manifold gasket (The P0171/0174 codes.) I just had mine repaired yesterday by the dealer that sold it to me. No CEL yet, fingers crossed. They plugged it into the emissions test machine and it still showed "not ready" so I have to drive it a few more days before I get it emissions tested. Hopefully it will pass and can get registered.

Stop lamp circuit: Do your brake lights work?
 
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massivespl

massivespl

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Very common problem. There is a TSB on the intake manifold gasket (The P0171/0174 codes.) I just had mine repaired yesterday by the dealer that sold it to me. No CEL yet, fingers crossed. They plugged it into the emissions test machine and it still showed "not ready" so I have to drive it a few more days before I get it emissions tested. Hopefully it will pass and can get registered.

Stop lamp circuit: Do your brake lights work?

Tail lights and break lights work fine..

So I'm gunna need new intake gasket for those other codes?
 

Martinjmpr

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Tail lights and break lights work fine..

So I'm gunna need new intake gasket for those other codes?

Not an expert but my guess is yes.

Here is the TSB, you can probably put this into a search engine and find more info:

TSB 05-06-04-029A, June 15 2005.
 
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massivespl

massivespl

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Not an expert but my guess is yes.

Here is the TSB, you can probably put this into a search engine and find more info:

TSB 05-06-04-029A, June 15 2005.


Ok for the code c0281 I have a apt Tuesday at Larrys auto electric, he's the best around here. Hopefully he can track that code down... And I watched a YouTube video on replacing intake gasket and that's to big of a job for me, I don't trust myself to go that deep into things.
 

Martinjmpr

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I looked at the service ticket they wrote on mine (which was covered by the dealer) and I think it came out to around $250 P&L. Not great, but not terrible either.
 

SLCHOE

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First one

C0281 stop lamp switch circuit
P0171 bank 1 system to lean
P0174 bank 2 system to lean


What's wrong with my truck. She still runs like a champ

If only it were that simple. :)

You need a diagnostic performed. Lean codes can be as simple as a dirty MAF sensor, vacuum leak or plugged fuel filter to more expensive repairs like leaking intake gaskets or weak fuel pump to name the most common. Looking at the engine live data with experience and knowledge will determine the issue.
 

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