The P0573 trouble code indicates that there is a high input signal detected in the cruise control or brake switch A circuit. The cruise control or brake switch is a component that signals the cruise control module when the brake pedal is pressed, allowing the system to deactivate.
P0573 Cruise Control/Brake Switch A Circuit High
Code symptoms P0573.
1. Inoperative cruise control system.
2. The cruise control system may not disengage when the brake pedal is pressed.
3. Illumination of the Check Engine Light.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0573.
1. Faulty cruise control or brake switch.
2. Damaged or corroded wiring or connectors in the cruise control or brake switch circuit.
3. Mechanical issues with the brake pedal or brake switch assembly.
4. ECM or PCM software issues.
Code Solutions P0573.
1. Inspect the cruise control or brake switch for proper operation and replace if necessary.
2. Thoroughly inspect the wiring harness and connectors associated with the cruise control or brake switch circuit for damage or corrosion. Repair or replace any damaged components.
3. Check for any mechanical issues with the brake pedal or brake switch assembly that may be causing the high input signal.
4. If possible, update the ECM or PCM software to the latest version provided by the manufacturer.