I don’t know if anyone can help but I’ve go a 2015 120D msport auto .I’ve had this car for about two years and love but just recently it’s been playing up. The problem I get is sometimes when pulling away at a junction, roundabout etc it hesitates and sometimes it does it going down the road but I get no warning lights on the dash. I’ve plugged in a fault code reader and the fault codes are- P255B(00), P255C(00),P284A(00) and P22AE. Any help much appreciated. Thanks in advance.

Morning Tim

Welcome to the Forum

You really need a BMW specific code reader to understand what is going on, the Generic codes you have are identifying symptoms. As you can see you have 4 codes any one could be causing the others as they are not seeing the correct operating parameters. The issue is you change a speed sensor (P255B) and find it hasn't cured the issue you can carry on changing parts till you cure the issue, an expensive.way of working

A BMW specific diagnostic will give accurate information as to whether your issue is Sensor related or Turbo related (which is what your codes indicate) I would either get a a copy of INSTA/INPA or BMW 1.4.0 or Carly for BMW easy and cheap to buy on the internet and load it onto a laptop or find a BMW specialist near you who can run a diagnostic for you (cost will be lower than a Main Dealer)

Dave

Thanks Dave I think you’re right but reluctant to take it to BMW so will have a look and see if I can find a non franchise BMW expert. 

Thanks for the advice.

Morning Tim

Google The Register of BMW Specialists 

All BMW Independent Garages should be one near to you

Dave

Thanks Dave I will have a look 👍