C1A96-64 Brake Light Switch - Signal plausibility failure: Action

NOTE: After clearing the DTCs, the warning indicator(s) may not extinguish until the vehicle speed has exceeded 10mph (15kph)

Check the brake pedal switch installation
Refer to the applicable SYSTEM WIRING DIAGRAMS and check the brake pedal switch circuit for short circuit to ground, short circuit to power, open circuit, high resistance