Where is the Fuse for Check engine light 1995 Mercury Sable?

There isn't a fuse specifically for the check engine light (malfunction indicator lamp or MIL) in a 1995 Mercury Sable. The check engine light is illuminated by the powertrain control module (PCM) itself, not by a dedicated fuse. A problem with the light itself (burned-out bulb) is less common than an issue with the PCM or its associated wiring.

If your check engine light isn't working, the problem likely lies within the PCM or its circuits, not a blown fuse. You'll need to have a mechanic diagnose the underlying issue causing the light malfunction (or the absence of the light when a problem exists). Checking all the relevant fuses in the underhood fuse box and the interior fuse panel is a good first troubleshooting step for *other* electrical issues, but not directly for the check engine light itself.