Ok I'll try to make a long story short here. I did a wack of upgrades to my car, big turbo, intake, fuel rail, FMIC blah blah blah anyways, I'm getting my stage 3 tune done by Dave at Motoza who by he way has been great through this all. I did the wideband conversion on my car and got an ecu from a 2001 VW Passat with the ecu model number 4B0 906 018 CM.
The Passat was a 4 motion auto all that. Now all the tuners I talked to assured me this ecu would work for my car with a few coding issues that it would have to be sent in for. So I sent it to Dave and got it back, engine starts great, sounds awesome but the transmission will not shift gears. I can go in reverse and drive but when I accelerate it feels like I'm stuck in 3rd gear and it will not shit, in triptonic mode or otherwise and I'm getting error code P1841 and p1850 when I scan my auto trans module in VCDS. I also checked all the coding between my old ecu and the upgraded one and it is all the same except for the engine code being changed due to having a wideband ecu now.. I'm wondering if it's caused by incompatibility with my instrument cluster maybe? As I did not change it with my ecu. Any help would be appreciated!
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