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P2177 Diagnostic Trouble Code Discussion for November 2012

Fuel System Too Lean At Off Idle (Bank 1)

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Trouble Ticket Help Requests for DTC P2177
Help Request Posted
2009 Chevrolet Traverse LS 3.6L MIL Lamp on VIN: 1GNER13D59
P2177: Fuel trim lean bank 1 on cruise or accel. Engine runs strong on acceleration, O2s go rich on VE run and truck pulls hard, VE results 93.668%, but this a variable cam engine so not sure if it's a good number. Scanner data indicated 100% on VE run. Code sets according to GM when ECM detects the MAF sens...
November 15, 2012