Mitutoyo Caliper Error Code E--05 [cracked] -

: The encoder disc may not be making proper contact with the sensor due to a drop or loosened internal screws.

: Moisture, oil, or coolant on the scale is the most common trigger.

Even if the screen looks bright, try a fresh battery. Avoid LR44 alkaline batteries if possible, as they have a shorter life and less stable voltage. How to Prevent It

Let’s face reality. If you have performed the hard reset, replaced the battery, cleaned the scale meticulously, and moved at a snail’s pace, yet persists or appears randomly every few minutes, your caliper is likely suffering from a failed encoder ASIC (application-specific integrated circuit) or a cracked substrate.

Imagine if your caliper lost its position while you were checking a +/- 0.0005" tolerance. It might display "1.2345" inches when the true measurement is "1.2455" inches. The result? A bad part passes inspection, or a good part gets scrapped.