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P0571

P0571 - Cruise Control/Brake Switch 'A' Circuit Malfunction

Possible causes
- Faulty Brake Switch
- Misadjusted brake switch
- Brake Switch harness is open or shorted
- Brake Switch circuit poor electrical connection
When is the code detected?
The P0571 codes is set when the stop light switch does not turn off even once the vehicle is driven.
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Stop light inoperative
- Cruise control system inoperative
P0571 Description
When the brake pedal is depressed, the stop light switch sends a signal to the Engine Control Module (ECM). When the ECM receives this signal, it cancels the cruise control.
P0571 For specific makes
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