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P0173 Diagnostic Trouble Code Discussion for May 2006

Fuel Trim Lean Or Rich (Bank 2)

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Trouble Ticket Help Requests for DTC P0173
Help Request Posted
1999 Mercedes-Benz CLK320 3.2L MIL Lamp on VIN: WDBLJ65GXX
P0173: fuel trim malfunction. to all benz techs. I have a clk320 that was sold, by chevy dealer. check engine light came on. scanned vehicle found codes 170 and 173. engine runs good, not noticeable idling issues. looking at datastream find long term fuel trims to be 32 percent and 30 perc...
May 19, 2006
2001 Mercedes-Benz C240 2.6L Misfire VIN: WDBRF61J21
P0173: fuel trim malfuntion bank 2. ... P0304, P0305, P0306, P0170 and P0173. After checking the plugs, I found it had the wrong plugs installed and they were in bad shape. I replaced the plugs and road tested vehicle for about 35 miles. The mil came back on, on...
May 31, 2006