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Check engine light problem

7.5K views 1 reply 2 participants last post by  Ncrvelin  
#1 ·
Hi everyone just after some help please with our 2016 Mini Cooper SD (B47) on the next thing to try.

I had an engine check light come on and when scanned get the following codes.

These have reappeared after each attempt to fix. It doesn't come back on until a couple of days when the codes are cleared.

Replaced the corrugated hose that had a small slit in from the air intake near the turbo
Tried new MAF sensor and reset adaptations
Tried new gas pressure sensor on the DPF
Forced a Regen, soot levels are low
New air filter with the thinner fleece

290900 - Air Mass system measured air mass too high
290B00 - Air Mass system measured air mass too low
28EC00 - Exhaust gas pressure upstream ambient pressure
2AB600 - Exhaust back pressure sensor before turbine signal too high
28DE00 - Exhaust back pressure sensor before turbocharger signal implausible

Any ideas of the next thing i can look at. Thanks very much
 
#2 ·
I have the some problem now. Just went to the dealer and they told me that the pipe that goes from exhaust to pressure sensor is probably clogged and that is what is causing the issue (meaning the pressure one pressing the accelerating pedal doesn't fall down when de-accelerating), and they told me they would order a new pipe and a sensor which totaled to 185€ + VAT (that is cost without labor). I know some people have cleaned that pipe but I am unsure really how to do it.