P0571: Cruise Control/Brake Switch A Circuit Malfunction

What does P0571 mean?

P0571 is a diagnostic trouble code indicating "Cruise Control/Brake Switch A Circuit Malfunction". A component in the braking system has been flagged as malfunctioning by the vehicle's ECU. This requires diagnosis to determine whether the part itself has failed or if there is a related wiring or control issue.

Symptoms you may notice

• Check engine light (MIL) illuminated on dashboard
• ABS warning light on
• Brake pedal feels different
• Unusual braking behaviour
• Intermittent warning lights

Common causes

• Faulty braking system component
• Wiring or connector issue in the related circuit
• Failed sensor providing incorrect readings
• Software/calibration issue requiring ECU update
• Related component causing secondary fault

What should you do?

This is a critical issue. Stop driving as soon as it is safe to do so and have the vehicle inspected immediately. Continuing to drive could cause further damage or pose a safety risk.