Firstly apologies if this has already been asked, I had a good search through the forum first and didn't find this exact issue so here we go 
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I have a 2017 automatic B200d with the 2.1 OM651 engine that's done around 28000 miles. The engine light comes on and goes off and running a scanner on it gives the P040100 (flow rate of EGR positioner (high pressure) is too low) code.
The car has been into my local Inchcape MB dealership four times now, they have replaced parts and the most recent visit was within the last week where it was in for a few weeks waiting for the parts to be signed off under warranty and it's been used daily since for 10-15 miles each day.
My question is whether this is a normal thing with these cars - it only started doing it around the 20000 mile mark. Is there something the dealership could have missed?
I know when it is happening because there is a drop in power, the paddles do not change into manual mode and the engine hangs around the 3000rpm mark for a second or so when changing up.
.I have a 2017 automatic B200d with the 2.1 OM651 engine that's done around 28000 miles. The engine light comes on and goes off and running a scanner on it gives the P040100 (flow rate of EGR positioner (high pressure) is too low) code.
The car has been into my local Inchcape MB dealership four times now, they have replaced parts and the most recent visit was within the last week where it was in for a few weeks waiting for the parts to be signed off under warranty and it's been used daily since for 10-15 miles each day.
My question is whether this is a normal thing with these cars - it only started doing it around the 20000 mile mark. Is there something the dealership could have missed?
I know when it is happening because there is a drop in power, the paddles do not change into manual mode and the engine hangs around the 3000rpm mark for a second or so when changing up.
