Mitutoyo Caliper Error Code E--05 Updated Jun 2026

Follow these troubleshooting steps in order to diagnose and fix the E--05 error. Step 1: Perform a Hard Power Reset

from a drop that permanently altered the gap between the sensor and the scale.

Are you currently using an battery or an LR44 alkaline battery? Share public link

Disconnect any USB, RS-232, or Bluetooth transmitter. Power cycle the caliper (remove battery, wait 10 seconds, reinsert). mitutoyo caliper error code e--05

Error Code E--05 is one of the most common critical errors encountered on Mitutoyo’s line of Absolute Digimatic Calipers. Unlike low-voltage errors (which typically display a battery icon) or overflow errors (which display "E"), E--05 indicates a failure in the caliper's ability to determine its absolute zero position. This usually happens when the internal sensor loses track of the scale's origin.

Perform these checks before declaring the unit unrepairable:

Press and hold the or ZERO/ABS button while inserting a fresh battery. Follow these troubleshooting steps in order to diagnose

Before sending your caliper for repair, work through the solutions from the simplest to the most involved.

Before disassembling the tool, try these non-invasive steps: Replace the Battery

Moisture entering the encoder unit interferes with the capacitive reading mechanism. Share public link Disconnect any USB, RS-232, or

Always use a name-brand CR2032 (Sony, Panasonic, Murata). Avoid cheap bulk battery packs. One fresh battery can last two years.

What or IP rating (e.g., IP67 coolant-proof) is your caliper?

The "E--05" error on a Mitutoyo digital caliper is a generic fault indicator that can represent a few related technical issues. It indicates that the caliper's internal processing system has encountered an error. Across Mitutoyo's documentation and user forums, this error is most frequently described as an or an "Overspeed" error.

A hard drop or twisting force can: