Malfunctioning

This is for things like getting clogged with dust, wet, getting worn down, simply poor reliability of the tool to begin with, etc. May either be simulated or random chance. Implies that the tool is still usable to some extend unlike with item durability which implies that the point it "malfunctions", it breaks does down completely.

Note that weapon jams are generally quite fast and easy to solve, unlike what you tend to see in popular media where a gun jamming makes it completely unusable, but that's the same media where guns tend to have infinite ammo.

Common examples:
* Weapon jamming
* Engine stalling

Uncommon examples:
* Dud explosives

Implied: (not enforceable)
* Item durability

Related:
* Repairing