Faulty Brake Switch
Misadjusted brake switch
Brake Switch harness is open or shorted
Brake Switch circuit poor electrical connection
Engine Light ON (or Service Engine Soon Warning Light)
Stop light inoperative
Cruise control system inoperative
When the brake pedal is depressed, the stop light switch sends a signal to the Engine Control Module (ECM). When the ECM receives this signal, it cancels the cruise control. The P0572 code is set when the stop light switch signal is too low.