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2020 FORD F-150
3.5L V6 EcoBoost•RWD•AUTOMATIC•gas•turbo
11 active safety recalls on this vehicle — view recalls
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Repairs418Labor1009Torque7006Fluid18DTC3214Battery2Maintenance0Recalls11
P0572moderate severityPowertrain

Cruise Control/Brake Switch A Circuit Low

on 2020 Ford F-150 3.5L V6 EcoBoost · RWD

What this code means

The PCM detects a low signal voltage in the brake switch circuit used by cruise control. This often indicates a short to ground or a failed switch.

Symptoms

  • Cruise won't disengage on braking
  • Brake light issues
  • Cruise control faults

Common causes

  • Short to ground in circuit
  • Faulty brake light switch
  • Corroded connector
  • PCM fault

Diagnostic steps

  1. Read stored codes
  2. Test brake switch signal voltage
  3. Inspect wiring for shorts to ground
  4. Replace switch or repair wiring
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