hello good work 1999 volvo s80 2.9 have 4t65e gearbox in my vehicle. Water entered the transmitter from the radiator malfunction. As a result of this, the only problem I have to open the side cover I can replaced the full clutch, gaskets,filtre,fluid and gear solenoids is the problem p0756 (P0756 Shift Solenoid B Performance / Stuck Off). there is a p01618 error. 1.2.4. No problems in gears. but the 3rd gear is after 60 km (after reaching speed) passing activated . Thank you for your patience I was a bit long eskişehirdeyim volvo no service I tried to do something for myself. rejoice if you help me

Reading around on your P1618 on a Volvo, many folks say to check the connections between the TCM and the PCM, as well as any other wiring related to both.