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P0173 Diagnostic Trouble Code Discussion for November 2005

Fuel Trim Lean Or Rich (Bank 2)

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Trouble Ticket Help Requests for DTC P0173
Help Request Posted
2000 Mercedes-Benz C280 2.8L MIL Lamp on VIN: WDBHA29G0Y
P0173: long term fuel trim-bank 2. This car mil comes on intermittently and sets codes for long term fuel trim both banks. Erase the codes and the light comes back on after a couple of days. We checked the usual suspects (vac leaks,o2 sensor, etc...). If this were a vw we would replace the MAS....
November 01, 2005
1999 Mercedes-Benz ML320 3.2L Poor Idle Quality, MIL Lamp on VIN: 4JGAB54EXX
P0173: Bank 2 Fuel Trim. Customer Complaints that when cold has to hold accelerator so engine wont die. After worms up, it idles ok. Recently MIL light on with codes PO 170 Bank 1 and PO 173 Bank 2 fuel trim
November 10, 2005
1997 Mercedes-Benz C230 2.3L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 2020262F65
P0173: Fuel trim Bank 2. Hello, I hope someone can help or has seen this problem before. The car came in with what appeared to be all the indicators of an air mass sensor, based on fault codes. Replaced the plugs based on milage. Fitted new sensor - no better.Fault code #'s PO302 &...
November 23, 2005