P0171 OBD code on 2002 Tahoe

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Oct 24, 2009 | 6:07 PM

AZ TAHOE

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P0171 OBD code on 2002 Tahoe

I have a 2002 Tahoe that recently coded P0171 lean bank 1. I was wondering where bank 1 is? Can any body help me trouble shoot this one?

Oct 24, 2009 | 9:00 PM

73shark

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From: KC, MO area

Welcome to the forum.

I believe it's the left bank (driver's side).

Nov 7, 2009 | 3:03 PM

farmtruckman

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lean condition

Usually, lean conditions are from bad O2 sensors. Might check the O2 sensor on that side. Not sure what Chevy's cost but Ford ones are around $20. Just be careful when replacing when pipes are hot (they come out easier when pipes are heated up.

FTM

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