DTC P06B8-00: Access Error To NVRAM In TCM [TCM]

System malfunction location	Access error to NVRAM in TCM
Detection condition	NVRAM in the TCM cannot hold/write/read data. Preconditions Battery voltage: Specified value or more
Fail-safe	Not applicable
Possible cause	TCM initial learning error (Refer to INITIAL LEARNING [EV6AX-EL] and/or INITIAL LEARNING [GW6AX-EL] in the service information.) Control valve body malfunction (TCM internal NVRAM malfunction) (Refer to applicable CONTROL VALVE BODY REMOVAL/INSTALLATION [EV6AX-EL] and/or CONTROL VALVE BODY REMOVAL/INSTALLATION [GW6AX-EL] in the service information.)
Repeatability verification procedure	Clear the DTC recorded in the memory. (see CLEARING DTC .) Perform the following procedure to ensure that the DTC has been resolved: Switch the ignition ON (engine off or on).
System wiring diagram	Not applicable