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P2177 Diagnostic Trouble Code Discussion for November 2016

Fuel System Too Lean At Off Idle (Bank 1)


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Trouble Ticket Help Requests for DTC P2177
Help Request Posted
2012 Mercedes-Benz S550 4.6L MIL Lamp on VIN: WDDNG7DB2C
P2177: Mixture bank 1 too lean in partial load operation stored. Client experienced check engine MIL and slight rough idle (no misfire codes). On freeze frame data at time code for mixture too lean set additive (idle) mixture correction was 2% right, 1% left (ie perfect), only right side multiplicative (part load) correctio...
November 29, 2016