19" Mustang Gt 4" to 8" upgrade

[supertuner700]

Hello,
I upgraded my base to a premium screen with Nav from a wrecked car. Everything was plug and play except the modes toggle switch is not working. I connected Forscan and read all modules but APIM has DTCs uo238:00-0B and ICM: unable to read DTC. In the DTC tab, I have APIM u0238:00-0B Lost communication with digital audio control module D
Status
-DTC present at time of request
-Malfunction indicator lamp is off for this DTC
Module: Acccessory Protocal interface module.

What am I missing?

[supertuner700]

ICM is the power pack gauges that I had unplugged....so now I just need to figure out the DTC for APIM

[JohnOBC3415]

Were you ever able to program the vehicle after upgrading the screen? I am currently upgrading a 2018 Mustang v6 from base 4 inch factory display to a 8 inch. I can not figure out programming for the life of me. I am following the Hellhorse Performance install guide. Only communication I get is from the BCM and the PCM. It is requesting more changes to be made concerning drive modes in the ABS and IPC modules.