The improper heat treatment can result in the halfshaft breaking, preventing the engine from moving the vehicle, and can allow a possible roll away situation if the parking brake is not engaged. This can increase the risk of a crash.
Honda will notify owners, and dealers will inspect the halfshaft's serial number, replacing it as necessary and aligning the front wheels, free of charge. The recall began December 8, 2017. Owners may contact Honda customer service at 1-888-234-2138. Honda's number for this recall is K0E.