Leave the caliper in a warm, dry environment (like an airing cupboard or under a desk lamp—never a microwave or oven) for 24 hours to let any internal condensation evaporate. How to Prevent the E--05 Error
Reinsert the battery (or a brand-new one) and check the display. Step 2: Clean the Scale and Slider Cleaning is the most effective fix for this specific error. Open the caliper jaws completely.
Follow these troubleshooting steps in order to diagnose and fix the E--05 error. Step 1: Perform a Hard Power Reset mitutoyo caliper error code e--05
| Cause Category | Specific Trigger | Frequency | |----------------|------------------|------------| | | Conductive debris (metal dust, coolant residue) bridges the slider’s pickup electrodes, corrupting the absolute code pattern. | High (60%) | | Loose or damaged flexible circuit | The thin plastic ribbon cable connecting the scale to the slider’s PCB has micro-cracks or oxidation. | Medium (25%) | | External communication conflict | An attached data output tool (e.g., Mitutoyo 264-012 USB adapter) draws incorrect current or sends handshake noise during power-up. | Medium (10%) | | Low/degraded battery | Voltage drops below ~1.35V, causing logic-level instability but not yet triggering the low-battery icon. | Low (5%) |
On Mitutoyo Digimatic instruments, this code typically triggers when the electronic circuit cannot process the displacement signal correctly. While most common on micrometers, it appears on calipers when the reading head encounters a "dead spot" or interference on the scale. Primary Causes Contamination Leave the caliper in a warm, dry environment
Because electromagnetic and capacitive sensors are highly sensitive to microscopic fluid barriers, cleaning is your first line of defense.
To avoid future E--05 errors, users should adopt disciplined practices. First, always slide the caliper at a moderate, steady speed—never "flicking" or rapidly accelerating the slider. Second, keep the caliper clean and dry, storing it in its protective case away from coolant mist and chips. Third, replace the battery promptly when the low-battery indicator appears, and use high-quality cells. Finally, perform a quick "origin reset" each time the caliper is powered on, especially after battery changes. These habits not only prevent E--05 but also extend the instrument's life and maintain its certified accuracy. Open the caliper jaws completely
Look closely inside the cable connector head. Are any pins bent, pushed back, or broken?
The indicates an encoder overspeed or signal disruption error , which disrupts the device's ability to track precise measurements. In Mitutoyo measuring instruments, this specific code triggers when the digital read-head cannot accurately scan the scale's tracking lines. This error is usually caused by excessive sliding speeds, a dying battery, scale contamination, or sensor physical misalignment .