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P0173 Diagnostic Trouble Code Discussion for May 2005

Fuel Trim Lean Or Rich (Bank 2)

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Trouble Ticket Help Requests for DTC P0173
Help Request Posted
2001 Mercedes-Benz ML430 4.3L MIL Lamp on VIN: 4JGAB72E31
P0173: fuel trim limits reached bank 2. I checked some other posts and bleed the air from the fuel rail. Road tested the car and monitored PIDS, the fuel trim readings seemed to be coming down, they started at 30.1 & 28.7, after a short road test they came down to around 22 on both sides. I have...
May 09, 2005
1999 Mercedes-Benz ML320 3.2L MIL Lamp on VIN: 4JGAB54E2X
P0173: trim malfunction bank 2. this vehicle also had misfire codes, the other codes seem to have gone away, but the trim mal. codes seem to stay. customer replaced upstream ox. sensors with non-oem sensors, i'm wondering if this could be an issue for this codes.I don't have any vacuum leaks...
May 26, 2005