Div.Error memory without effects

Hello in the round. Ride a Trafic III, 170 HP automatic from 2021 with approx. 47000 km. The car is a camper extension of the company Adria Active Pro. In the last months sporadic error messages “Check In” and “Check Abgaessystem” were displayed. however, after a certain time weeer disappeared. There was no power loss, motor stutters or similar. In the engine room, however, a marten drove its mess. In addition to a insulation plate and a insulation layer on the spray wall, which completely I suspect that he has bitten any cables that then cause error current messages. Does jemnad have experience with such effects? A HU has been made and the exhaust gas values were exemplary. Currently, a lot of error messages are included in the memory. Thanks for tips and hints.