found this on benzword:- I find out that Volkswagen and other Euro car manufacturers use an "Electronic Power Control" in their gasoline-powered cars which is a fairly complicated system for regulating throttle plate position electronically. The system takes input from accelerator pedal position, engine torque sensors, transmision, brakes, throttle plate location feedback, etc. and then drives the throttle plate motor to the proper position. Presumably, there is a similar functionality for controlling diesel fuel injection. Assuming that the Mercedes EPC is similar, there are quite a number of possible culprits for system malfunction. I'm hoping I get a mechanic at the dealer tomorrow who is willing to take a serious look at the error codes and narrow down the possibilities.
