PEUGEOT 607 2.2Hdi Automatic 2004 ENVIRONMENTAL PROTECTION SYSTEM for the engine defective

Hello dear friends, have bought me a Peugeot 607 2.2Hdi bj.2004 according to the owner he emptied the Dpf but did not program anything moderately just for preliminary information, the car is currently in emergency engine control light lights no power, and on the Navi display comes the message “environmental protection system for the engine defective ” according to the previous owner and Peugeot workshop it is the pump in the additive tank and have suggested to replace the tank. This error was also before he got the DPF off Empty!!! I read out today with Delphi diagnostic device it really comes error with additive and an unknown error code see the picture all errors are visible. P0606 ECU faulty (microprocessor) 20021 unknown lazy code, P1435 additive system malfunction P1442 additive ECU and as last P0380 – circuit additional heating, short circuit at the plus pole is this really by you professionals here or the people who know well clearly the additive tank with pump? and what say t You can also disable this function additive system or should you keep it better,why? What do you say to “empty DPF mechanically” but to reprogram or adapt without a control unit????? Ask for your help is very desperate and doesn’t want to be done wrong.