Checking the Fault Symptoms

Theft Protection - DICE:

Fault symptoms
RADIO LOCKED is displayed on the SID if the main unit is "married" to the car. No sound from the loudspeakers.

RADIO CODE is displayed on the SID if the main unit is not "married" to the car. No sound from the loudspeakers.

Conditions
This DTC is generated if the main unit is communicating with DICE.