C4 grand picasso 1.6 hdi 2011 error U0304

[Aurelian_ct]

Hi... I have some problems with my Citroen c4 grand picasso 2011...I buy this car from Copart with many, many problems. One by one was fixed, except of one. I have problem with gearbox, and generate error U0304, basically change gear OK but only problem is when change gears the engine is running at high rmp... 3000-4000. I'm thinking is a problem with engine ecu( Continental SID807), I ordered a second hand one from Ebay(with key and BSI module) fitted on car, but no change... Same error same problem. After that I try to find CAN wires from gearbox to BSI, and I see something interesting... Someone else do the same thing earlier, all wires was removed from original position. I suppose some modules, ecu's (gearbox and engine), BSI, BDM was changed by previous owner.
I just want to ask if some one, here, can help me to find original code parts for this car from VIN number?
Thank you!

[GiveMeABreak]

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