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Discussion Starter #1
was driving my truck this morning (95173 miles) and both the Check Engine Light came on as well the gauge display showed TRACTION CONTROL OFF... any ideas on what the fix it. Code throws P0171
 

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There are several things that can cause a P0171 code. A vacuum leak or a dirty MAF sensor are the most common.
 

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Discussion Starter #3
Leaning on the dirty MAF..... Fingers crossed... cleaned MAF and changed air filter... will clean K&N filter and monitor... Hopefully goes off in a few trips.
 
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