I shift mid 130 psid 232 fmi 9 need help!

Hi everyone i have a horrible experience i have a code mid 130 psid 232 fmi 9 that is code for bad communication between transmission and ecu,iv been trying everything and no one couldn’t find problem , we even replaced with different transmissiona and a new transmission ECU , same code, checked wiring between transmission and engine and engine and truck CAN, everything is looks good, transmission is just going in safe mode and stops after 300 miles even the new transmission we try! Thats just crazy....

 

My friend we did all of this my electric did ohming all wires betwen cab en engine and between transmission , all even abs block, we try new computer connect still that dam code, the temperature and air is normal, like i said we installed new transmission and tested same problem, its just nightmare

 

Please tell me were to look next((((?

 

Volvo doesn’t tell nothing same as those “qualified” mechanics! Please read first post we checked and tried all that staff maybe with forgot to check something..