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A104

A104 - Abnormal connection detected

Makita · Tool Management System

What does A104 mean?

An abnormal connection has been detected between the tool, battery, or connector. This might lead to a failure.

Common Causes

  • Tool, battery, or connector is not properly connected
  • Loose connection

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Remove the tool and battery from the connector.

  2. 2

    Check all connections for dirt or damage and clean if necessary.

  3. 3

    Re-install the tool and battery securely.

  4. 4

    If the error persists, try again after a while.

Browse all codes in this manual (6)
Verified technical data. Last updated: April 2026

Related Faults

A102A102 - Could not communicateA103A103 - Communication failedA105A105 - App not authenticated
Source: Makita Tool Management System
Open Manual (Page 30)Search more codes in this manual