What type of engine?
How many hours are on the engine and the age of the engine?
At a quick glance a control module may have failed that was common to the inputs. I would trace those points back and see if they go to a common module.
I haven’t had this problem on a Wartsila engine, but had a ABB DCS module fail and bring in stale data (flat line). Luckily the operator and supervisor noticed the problem soon enough and was able to trip the unit manually.