Those codes are not fault codes they are module identifiers. Ecu128 is the engine module meaning that the engine is reporting on the datalink that it has a fault. If I remember correctly the cdu219 is for the Vorad module but I am not positive. You are going to have to pull the actual fault codes for anyone to help you.
219 is the MID for the Vorad module like I thought it was. It is not a fault code. Depending on the model truck and what dash he has he can either get the PID, SID, and FMI from the dash or the flash code from the check engine light.