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Running Lean in Both banks!

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Old Apr 12, 2011 | 12:09 PM
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glerma
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Burning Brakes
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From: Corpus Christi TX
St. Jude Donor '05
Default Running Lean in Both banks!
Hello all. Check engine light cam on this morning... Pulled the codes and found 2 PCM related codes:

P0171 Fuel Trim System Lean Bank 1

and

P0174 Fuel Trim System Lean Bank 2

Does anyone have any ideas of what could causing these codes? Car seems to run fine... but the light is on, and the codes are showing.
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Old Apr 12, 2011 | 02:58 PM
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Have you ever had the intake manifold off?
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