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P2177 Diagnostic Trouble Code Discussion for August 2012

Fuel System Too Lean At Off Idle (Bank 1)

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Trouble Ticket Help Requests for DTC P2177
Help Request Posted
2004 Volvo S80 2.9 2.9L MIL Lamp on VIN: YV1TS92DX4
P2177: System too lean off idle bank 1. Vehicle came in wil CEL on. Scanned and found lean codes stored. Tested MAF and it had intermittant drops. Replaced MAF. Customer came back 250 miles later with CEL on again and the same codes stored. Smoke tested intake, exhaust and pcv system. No leaks found...
August 13, 2012