Mitsubishi B1a10 Jun 2026

Mitsubishi B1A10 refers to a Diagnostic Trouble Code (DTC) indicating that the battery in the vehicle's first keyless operation key (Key 1) is low. This code is commonly triggered when the Keyless Operation System (KOS) or Wireless Control Module (WCM) detects a weak signal from the transmitter. Mitsubishi Tech Info Understanding the B1A10 Code Definition : Keyless/KOS Key 1 low battery. Trigger Condition

The system is designed to avoid "false positives" by requiring multiple confirmations before setting the code: mitsubishi b1a10

42B-B1A10 Keyless/KOS key 1 low battery - Mitsubishi Tech Info Mitsubishi B1A10 refers to a Diagnostic Trouble Code