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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
 
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