My honda fit was got the CVT gearbox failure on last night at highway.
The car is no powered on D & S and the sound is louder from gearbox.

Also i can change the gearbox position normally. there have not engine light.

I use the bluetooth ELM327 reader to reach out the code as follow
============1==============
P0717(02)
Raw code: 071702
ECU: 1D
Status: Pending, Confirmed, Test not completed during this operation cycle, Warning indicator requested
OBDII: Turbine shaft speed (TSS) sensor - no signal
Honda: Problem in Mainshaft Speed Sensor Circuit (No Signal Input)

============2==============
P0420(00)
Raw code: 042000
ECU: 11
Status: Pending, Test not completed during this operation cycle
OBDII: Catalytic converter system, bank 1 - efficiency below threshold
Honda: Catalyst System Efficiency Below Threshold

============3==============
P0752
Raw code: 0752
ECU: 1D
Status: Pending
OBDII: Shift solenoid (SS) A - stuck on
Honda: Shift Solenoid Valve A Stuck ON

============4==============
P0717
Raw code: 0717
ECU: 1D
Status: Pending
OBDII: Turbine shaft speed (TSS) sensor - no signal
Honda: Problem in Mainshaft Speed Sensor Circuit (No Signal Input)

============5==============
P0420
Raw code: 0420
ECU: 11
Status: Pending
OBDII: Catalytic converter system, bank 1 - efficiency below threshold
Honda: Catalyst System Efficiency Below Threshold

============6==============
P0717
Raw code: 0717
ECU: 1D
Status: Confirmed
OBDII: Turbine shaft speed (TSS) sensor - no signal
Honda: Problem in Mainshaft Speed Sensor Circuit (No Signal Input)