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manee

Automatic Transmission Code 4f86

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Morning

Hope you all will be well.

 

I am having this transmission code - 4F86; from my ZF 6HP21 transmission on my N47D20A engine 06/2008 120d Automatic. ii know it is not strictly a 5er and following no reply to my post in 1 series section, I am posting it in e60 section in search of some help  as I believe they share the similar gearboxes.  

 

The code was triggered last week following jerky transmission shifting and transmission malfunction sign, the transmission malfunction warning went way after switching off and on the car. Following the advice I replaced the gear box oil (meeting the ZF 6HP) specification, replaced the oil pan and  mechatronic bridge sleeve, it worked fine for a week and last evening it came back again along with the same symptoms. Like last time the transmission malfunction sign went away after switching off and on the car. I erased the code, however this afternoon when i ran the INPA again the code was there again nd this tie there was no warning or error message re transmission on the display.   

 

The error report from INPA is as under. Can any of you please help me to understand where i am doing wrong. 

 

Much appreciated. 

 

image.png.955b25435b7e9f249c9de834380a9323.png

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