DTC B1A25: Key ID unmatched: Notes
WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
When the DTC B1A25 is set, be sure to diagnose the CAN bus line. When replacing the ECU, always check that the communication circuit is normal.