my omega has no performance

hello together, have a big problem with my omega b kombi 3.0 automatic! have renewed the cylinder head seals and the timing belt. motor is back together, runs in empty run very nice (about 500-600 u/min)! even if I raise the speed it turns very nice round! the whole is finished at the moment I insert a direction of travel (R / D). runs now like a bag of nuts!!! when trying to drive it gets worse and worse. I put the automatic transmission back on N or P beko If he’s back in and runs great again! I’ve turned off the error memory. the control unit has filed the following error: FC-144 FC-145 FC-57 FC-16 FC-69 FC-19 FC-21 FC-129 I have no idea, watt is going now! about a tip I would be incredibly grateful! many greetings from köln