turbo has been replaced error codes were erased and car was taken for test drive but still not running on full power got a exlamation on the screen says unoperative see owners manual checked it on the machine again and gave out a few codes P0403, P2263 and P0244. the mechanics dont understand what to do now so ive told them to check the egr module as ive had a problem with it before with clogged diesel so ive told them to clean it and replace it then lets see if it works. if you have any suggestions on what i could do please tell me model of the car is mercedes benz C220 Cdi 2008
My car has 50000 miles.
My car has an automatic transmission.
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