P0173 Diagnostic Trouble Code Discussion for September 2006
Fuel Trim Lean Or Rich (Bank 2)
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| Help Request | Posted | |
| 1997 BMW 528i 2.8L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: WBADD6325V P0173: fuel trim malfunction bank 2. ... p1250,p0173,p1189,p0301. fuel trim way off. smoked intake and replaced lower hose to crankcase vent valve- smoked three times after- no more leaks. reset computer and test drove several times- feels good- no codes returne... |
September 15, 2006 | |
| 2001 Mercedes-Benz C240 2.6L MIL Lamp on VIN: WDBRF61J51 P0173: Lean bank 1Generic. Vehicle came in with the above codes. Code descriptions could be fuel trims above limits either rich or lean. I assume the system is lean due to positive numbers. I cleared the codes. At idle, the fuel trims were normal. LTFT was 0% and STFT was switching betw... |
September 26, 2006 |
