DTC B1451: No Registration of ID Code: Troubleshooting
WARNING: This page is about a different car, the 2008 Suzuki Grand Vitara and 2007 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
Register the tire pressure sensor ID code in BCM, referring to REGISTRATION PROCEDURE FOR TIRE PRESSURE SENSOR ID CODE . If tire pressure sensor ID code can not be registered in BCM, substitute a known-good BCM and recheck.