Hi, got A4 with multitronic gear box, 94k on the clock, have a fault code 18201 Transmission output speed sensor 2 (G196) Audi dealer says its Gearbox ECU and quote is over 1000 pounds. When saw the code just thought ohh its just sensor, but is it really in the ECU and will cost me that much? looked around few places that do rebuild but can i trust someone just to send of my part, pay the money and then wait to get it back and in working oreder? Smells fishy to send to someone part and money. Thanks for replay in advance