JustAnswer
>
BMW
Ask A Question
|
Register
|
Login
|
Help
BMW
Ask a BMW Question, Get an Answer ASAP!
Have your own BMW question?
19 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: 79 days and 21 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
My throttle cable recently broke and was changed, now my ...
is there a fuse for the electric windows
how do i reset my security system on my bmw z3?
when I put my key into the 2 position at my BMW X5, ...
CODE P0304 PENDING,NEW COILS, NEW INJECTORS,NEW SPARK PLUGS ...
we have an 88 bmw 528e, recently the car started stalling .....
2001 BMW 530i: What maintenance should be performed at ...
97 318TI LEAKING WATER FROM OVER THE BACK TRANSMISSION ...