The Solus is a cheaper mid range tool which are about 2k to buy new. They are pretty basic and to clear codes is quite simple. To alter the adaptation isnt as straight forwards so not that easy to get into if you dont know how. It would be difficul to screw the ECU up without knowingly tampering.

The kid hasn't caused those fault codes with the Solus in my opinion as it's just mong proof. Being a Vivaro it is more likely to be the van developing another fault on it's list.