If the error clears and reads 0.00 , test the slider. If the error returns immediately, proceed to Step 2. Step 2: Thoroughly Clean the Scale 90% of E--05 errors are solved by a proper cleaning. Open the caliper jaws completely.
The sensor housing is no longer at the correct distance from the scale.
What is the of your caliper (e.g., 500-196-30)?
Even if you own an IP67-rated coolant-proof Mitutoyo caliper, extreme exposure to pressurized coolant, deep submersion, or sudden temperature drops can cause internal condensation. Moisture directly on the internal circuit board will short out the sensor lines, leading to an immediate E--05 shutdown. Step-by-Step Troubleshooting and Solutions
Allow the alcohol to evaporate entirely before turning the unit back on. 3. Replace the Battery (Correctly) mitutoyo caliper error code e--05
If basic cleaning fails, the internal sensor may be misaligned: Tighten Internal Screws
Mitutoyo calipers are renowned for their precision and reliability in measuring various dimensions of objects. These digital calipers are widely used across different industries, including manufacturing, engineering, and quality control, for their accuracy and ease of use. However, like any electronic device, Mitutoyo calipers can encounter errors that may disrupt their operation. One such error code that users might encounter is E-05. This write-up aims to provide a comprehensive overview of the Mitutoyo caliper error code E-05, its causes, and step-by-step troubleshooting methods to resolve the issue.
Stick exclusively to SR44 silver oxide batteries for stable voltage delivery. When to Send It for Repair
Use a small screwdriver or wire to briefly connect the battery positive and negative terminals inside the compartment for 10–30 seconds. This drains the capacitors and clears the memory. If the error clears and reads 0
Dust, oil, or "crustiness" has built up on the sensor track, blocking the signal.
This is a classic symptom of a damaged or contaminated scale beam, or a worn read head. If the caliper works well at one end of its range but consistently errors in the same specific zone (e.g., always between 20mm and 40mm), it indicates a localized problem. Visually inspect the scale beam in the affected area for:
Locate the small adjustment screws (gibs) on the top or side of the slider.
A dying battery might still have enough power to turn the LCD screen on, but not enough voltage to properly power the capacitance sensor. This causes the sensor to misread the scale and throw an error code. Using cheap, non-silver-oxide batteries can also cause voltage fluctuations that trigger this issue. 4. Physical Damage or Sensor Misalignment Open the caliper jaws completely
One forum post suggested that the error might be caused by a faulty sensor or a problem with the caliper's internal mechanism. Another post recommended trying to reset the caliper by pressing a combination of buttons, but John had already tried that without success.
Any debris trapped beneath the reading head will cause a calculation drop-out. Slide the jaws completely open.
Moisture entering the encoder unit interferes with the capacitive reading mechanism.
Place the caliper in a dry, warm environment (like an airtight container with desiccant packets) for a few hours to draw out trapped moisture.