The trouble can be an intermittent malfunction (Refer to General Information - How to Use Troubleshooting/Inspection Service Points, How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).
4.Check whether the DTC is set again.
(1) Erase the set DTC.
(2) Charge the drive battery by using the Electric Vehicle Supply Equipment (EVSE) other than the defective one.