P0571 – Brake Switch A Circuit Malfunction

Description

The brake switch A circuit is malfunctioning.

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Symptoms

Cruise control not working
Brake lights stuck
Poor acceleration
Rough idle
Check engine light

Causes

Faulty brake switch
Damaged wiring
Loose connector
Brake pedal issue
ECU issue

Diagnosis

Inspect brake switch
Check wiring
Test connectors
Scan live data
Inspect pedal mechanism

Repair

Replace brake switch
Repair wiring
Fix connectors
Adjust pedal mechanism
Update ECU