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P0173 Diagnostic Trouble Code Discussion for January 2009

Fuel Trim Lean Or Rich (Bank 2)

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Trouble Ticket Help Requests for DTC P0173
Help Request Posted
2001 Mitsubishi Montero Limited 3.5L MIL Lamp on VIN: JA4MW51R71
P0173: Fuel Trim Lean Or Rich (Bank 2). ... Limited. 3.5L. Replaced plugs and wires on previous visit for code p0301. CEL came on after a while and codes were p0170,p0173. Could not find in Modis what codes were for. Shop Key was able to say fuel trim problem. LTFT was between 15 and 20 for both ban...
January 09, 2009
1998 Mercedes-Benz E320 3.2L MIL Lamp on VIN: WDBJH65F2W
P0173: Adaptation at limit at idle left bank. Greetings. Car has codes P0170-023 and P0173-134 for fuel trim out of limits. Problem is present at idle with numbers ranging from .747ms to 1.125ms at various times and tests. Engine is adding fuel (note ms reading) to correct for lean mixture at idle. Initia...
January 13, 2009
1999 Mercedes-Benz ML320 3.2L Cuts out, Stall VIN: 4JGAB54E0X
P0173: trim code Lt bank. I looked at fix data base, and see MAF sensor replaced for code, but they all had good fuel pressure. This is suppose to have 3to4 bar, and mine has 2bar and will just move up to 2.5 then sometimes 0 then shut off. I watched MAF grams per second and looked nor...
January 30, 2009