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Hi yes pretty positive. There is no knocking, judder or movement, just the engine feeling a bit uneven, not as smooth
there is nothing specific and common that causes this symptom
given the mileage of the vehicle I would suggest replacing spark plugs, coils, all oxygen sensors and the fuel filter - plus cleaning the throttle.
this should take care of any operating issues you are experiencing.
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I don't know if the following info has any bearing on the problem but I have a simple BMW code scanner. It is not showing any fault codes with the engine but is showing the following in other scan.
92 CAN torque interface
91 CAN torque reduction
5E19 CAN data fault from DME/DDE
it also indicates that a rear wheel speed sensor is faulty but this has been replaced with a new one.
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those codes are very generic and vague as simple code scanner codes always are, so unfortunately they do not point to anything specific, only to a mismatch / miscommunication about torque delivery
with this codes, I have to suggest investing in a proper diagnostic with a full on factory BMW scan tool which can pull detailed codes are run appropriate test plans .