P0173 Diagnostic Trouble Code Discussion for November 2007
Fuel Trim Lean Or Rich (Bank 2)
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| Help Request | Posted | |
| 1999 BMW 328i 2.8L MIL Lamp on VIN: WBABK8334X P0173: BMW code 203 O2 sensor control bank 2. Replace PCV valve (honker valve) even though the manometer test looked ok. Fuel pressure ok, air mass new. the o2 sensors look good with good voltages on road test and at idle. these codes are pertaining to bank 2; cyls 4-6 but I can not find any vacuum leaks ... |
November 02, 2007 |
