⚡ AUTO CODE FIX
🔍
ElectricalMinor✅ DIY Friendly

P0571

Cruise Control/Brake Switch A Circuit

Fault in the brake switch circuit that deactivates cruise control. The brake signal is used to disengage cruise when brakes are applied.

SeverityMinor
CategoryElectrical
Est. Repair Cost$20–$150
Code TypePowertrain
DIY RepairYes

⚡ Common Causes

⚠️ Symptoms

✅ How to Fix — Step by Step

  • Step 1:Inspect brake light switch adjustment and operation
  • Step 2:Test brake switch with multimeter
  • Step 3:Replace brake switch
  • Step 4:Check wiring from switch to cruise control and ECU
💡 Pro Tip: A bad brake switch that prevents cruise disengagement is a safety hazard — it must be repaired immediately.

Repair Cost Estimate

Full Repair Estimate
$20–$150
DIY Possible?
YES
Severity
Minor

Frequently Asked Questions

What does OBD2 code P0571 mean?+
P0571 stands for Cruise Control/Brake Switch A Circuit. Fault in the brake switch circuit that deactivates cruise control. The brake signal is used to disengage cruise when brakes are applied.
What causes code P0571?+
Failed brake light switch; Misadjusted brake switch; Open circuit in brake switch wiring; Failed cruise control module
How do I fix code P0571?+
Inspect brake light switch adjustment and operation; Test brake switch with multimeter; Replace brake switch; Check wiring from switch to cruise control and ECU
How much does it cost to fix P0571?+
Estimated repair cost for P0571 is $20–$150.
Is P0571 DIY-friendly?+
Yes — P0571 is generally DIY-friendly with basic tools.

AI Diagnosis

Related Codes

P0564Cruise Control Multi-Function Input A Circuit
MinorDIY
P0606PCM Processor Fault
Critical
P0560System Voltage Circuit Malfunction
CriticalDIY
P0562System Voltage Low
ModerateDIY
P0563System Voltage High
ModerateDIY