P0571
Systeem
Powertrain (Cruise Control)
Scanner vereist
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Cruise Control/Brake Switch A Circuit Malfunction

Understand P0571, common causes, and the right FOXWELL scanner to diagnose it.

Brake switch circuit fault — cruise control may not cancel or set properly.

Veelvoorkomende symptomen

  • Cruise won't set or cancel
  • Brake lights inop on some models

Typische oorzaken

  • Failed brake light switch
  • Adjustable brake pedal switch misadjusted
  • Wiring at brake pedal

Welke scanner heb je nodig?

Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Gebruik live data en freeze frame voordat je onderdelen vervangt. ABS-, SRS- en U-codes vereisen meestal een full-system scanner.

Diagnosetips

  • Leg freeze frame vast wanneer de code voor het eerst verschijnt
  • Wis de code pas na het oplossen van de oorzaak
  • Controleer op gerelateerde pending codes
  • Controleer of accuspanning boven 12,4 V is voordat je sensoren suspecteert

Aanbevolen FOXWELL scanners

Veelgestelde vragen

Can I diagnose P0571 with a basic code reader?
P0571 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with P0571?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.