Trouble Judgment
WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
The ETACS-ECU stores the DTC No. B210A if the power supply fuse (IOD fuse) voltage decreases to the specified value or less, and stores the DTC No. B210B if the power supply fuse (IOD fuse) voltage increases to the specified value or more. However, when the status returns to normal, the ETACS-ECU automatically erases the DTC Nos. B210A and B210B.