Mitsubishi B1766 Verified Jun 2026

The occurrence of this code usually follows a key replacement or a system reset where the synchronization between the key's ID and the Immobilizer-Electronic Control Unit (ECU) has failed.

. This error is typically triggered by the Electronic Time and Alarm Control System (ETACS-ECU) when it detects an ignition key transponder ID that has already been permanently "learned" or locked to a different vehicle. Mitsubishi Tech Info Understanding Code B1766 mitsubishi b1766 verified

: Attempting to use or program a used key from another Mitsubishi vehicle, or a mismatch following an ECU replacement. System Impact The occurrence of this code usually follows a

Loss of synchronization after a battery drain or ECU replacement. mitsubishi b1766 verified