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TROUBLE CODES ENGINE BANK 1 & 2 LEAN AND ALSO SOMETIMES CYLINDER MISFIRE
2001 BMW 325i
January, 3, 2012 AT 2:34 PM
I have changed out the fuel filter and checked for vacuum leaks not sure what to do next.
FOUND 489 RELATED QUESTIONS
Engine Code P2197 O2 Sensor Signal Biase
d / S
Code Po171 (system Too Lean Bank One)
January, 3, 2012 AT 3:30 PM
Could be one of the following below: 1. Vacuum leaks
2. EGR and PCV valve.
3. Low fuel pressure.
4. Dirty fuel injectors.
5. Mass Air Flow Sensor.
6. Oxygen Sensor.
January, 3, 2012 AT 4:45 PM
I also forgot to tell you I removed all of the spark plgs one at a time and 4 of them looked good but the last two had black spots instead of that gray color, /what does that mean
January, 3, 2012 AT 9:18 PM
Carnoned-up-means the fuel condition is too rich-
January, 11, 2012 AT 3:25 AM
Inspect the intake boot for tears or holes and consider that the factory recommends replacement of the oxygen sensors (pre-cat) at 100k
January, 13, 2012 AT 3:40 AM
May also need software upgrading.
January, 13, 2012 AT 2:39 PM
How do I get a software upgrade? I found the problem it was a tear is the oil dipstick vacuum hose.
January, 18, 2012 AT 1:29 AM
Clear the faults and thats it.
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