JustAnswer
>
BMW
Ask A Question
|
Register
|
Login
|
Help
BMW
Ask a BMW Question, Get an Answer ASAP!
Have your own BMW question?
17 BMW Mechanics are Online Now
characters left:
Not a BMW Question?
Question
I have lambda control limit codes for bank 1 and 2, and lamda controller deviation codes for bank 1 and 2 for being too lean "PO171B". What part could this tell me is faulty with my 01 Z3 3.0i BMW?
Submitted: 77 days and 18 hours ago.
Category: BMW
Value: $20
Status: AWAITING CUSTOMER ACTION
Answer
Hi, the most common issue that causes this is a torn rubber intake boot.
Inspect near the throttle body where it branches off to a smaller tube, they crack there and let unmetered air into the engine.
If there is no driveabilty issue this is likely the problem. Sometimes it's not obvious, I would use a flaslight, and use your finger to check for cracks in that area.
View Full Image
Expert:
bimmaster
Pos. Feedback:
100.0 %
Accepts:
Answered:
9/6/2009
BMW Technician
3 years dealer experience, master bmw tech
Related BMW Questions
I have a 2005 330xi, with Xenon. When I turn on ...
My car is in "safe mode"??? Keys will not unlock
I have a 1994 325, the drivers door stopped opening from ...
Adrian - Alternator replaced Sept 06. Battery replaced Aug ....
I''m having probs with my A/C in my E46. The fuses are
1991 325i was having great deal of trouble getting it ...
1997 740il wont start. everything turns on but engine wont
93 525i The power windows power sunroof and power locks