The official notice
Defect
On certain vehicles, a low-voltage condition caused by a loose battery connection or a low battery could cause a problem with the Transmission Control Module (TCM). If this happens, the transmission could shift to Park (P) while driving. This could cause damage to the transmission park pawl. As a result, when the transmission is shifted to P, the vehicle could move if the parking brake is not applied.
Safety Risk
A damaged transmission could allow a parked vehicle to move if the parking brake is not applied. This could increase the risk of a crash.
Remedy
Honda will mail a letter to owners asking them to take their vehicle to a Honda Automobile dealer. The dealer will ensure the battery terminals are secure and update the TCM with the latest software. If the parking gear cannot hold the vehicle in Park without application of the electronic parking brake, the transmission will be replaced.