None of us are here to argue with you, only to provide the advice that you asked for.
You need to realise this isn't something many other people would do/have any specific experience with.
Most specialists would maybe occasionally replace a individual faulty module, but failure is not common on the P1 cars apart from SCL and a specialist would know that only a Volvo dealer can easily program new modules, and that 2nd hand modules won't work.
Some modules can be blanked at the dealer, some can only be programmed once