: Using a specialized scan tool like the Mitsubishi M.U.T.-III , clear the existing key memory and perform a fresh registration for all ignition keys belonging to the car.
: Owners who lose their original keys and source a used key from a salvage yard will trigger B1766 because the transponder chip in that used key is permanently "locked" to its original vehicle. mitsubishi b1766 verified
Attempting to use a new, unprogrammed transponder key that was incorrectly handled. A malfunction within the or the Immobilizer-ECU . : Using a specialized scan tool like the Mitsubishi M
: If the code persists with all registered keys, the problem lies deeper in the security system or the ECU itself. 2. Registration and Programming mitsubishi b1766 verified