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Greg, Shop Owner
Category: UK Car
Satisfied Customers: 7121
Experience:  17 years Shop Owner /Technician. 27 years experience,
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X3 20 d: Bmwx3 20d code 3ffo keeps coming up changed airflow

Customer Question

Bmwx3 20d code 3ffo keeps coming up changed airflow meter and decoked the egr and inlet manifold still the same cheers fred
Submitted: 4 years ago.
Category: UK Car
Expert:  Greg replied 4 years ago.
Name is Greg and i will assist you the best i can, please Only accept if you are happy with my answer.

Hi .

I have just seen that you have been waiting a while for assistance ,are you still in need of assistance .

Regards Greg
Customer: replied 4 years ago.
Yes please problem still not sorted
Expert:  Greg replied 4 years ago.
Hi Fred .

Check the egr valve actuator as i have seen this part cause the MAF code and this was the fault, see if you can try another known egr valve actuator just to be sure .
Otherwise you will then have to check the wiring harness and connection on the MAF
and then to the ECM.

A good dealer level scan tool would be your best bet as when you have this code it will take you on a ladder route repair .

Fred check the connections on the MAF then the egr valve actuator,if you see all is ok check at the dealer if there is a ECM reflash/reprogram to clear this issue .

Please rate my help a 3 to 5. If you are not satisfied please don't rate.
We can continue to work or I can opt out.
If I don't reply soon I will as quick as I can.

Kind regards Greg

Rgds Greg