Follow this diagnostic sequence from easiest to most advanced before seeking professional repair or tool replacement. 1. Perform a Hard Power Cycle and Origin Reset
Move the jaw slower. Replace battery (SR44). Clean the scale. If error persists at slow speed, the scale/reader may be damaged. Support: mitutoyo.com/support mitutoyo caliper error code e05 link
: This is a precision repair. It involves adjusting internal set screws to reset the preload on the encoder disc. If you aren't comfortable with tiny components, consider sending the unit to an Authorized Mitutoyo Service Center. Follow this diagnostic sequence from easiest to most
Water ingress is a known cause of E-05, as moisture can interfere with the capacitive sensor and corrode the PCB over time. If water gets inside, disassemble, clean thoroughly with isopropyl alcohol, and let dry completely before reassembly. Replace battery (SR44)