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2006 MAZDA MPV
3.0L V6•FWD•AUTOMATIC•gas
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor486Torque3100Fluid7DTC1789Battery1Maintenance0Recalls2
P1520high severityPowertrain

Brake Switch Circuit Malfunction

on 2006 Mazda MPV 3.0L V6 · FWD

What this code means

The PCM detects a fault in the brake switch circuit signal. This can affect cruise control and other brake-dependent functions.

Symptoms

  • Cruise control inoperative
  • Brake lights malfunction
  • Check engine light on

Common causes

  • Faulty brake light switch
  • Misadjusted brake switch
  • Damaged wiring or connector
  • Blown fuse

Diagnostic steps

  1. Scan for stored codes
  2. Inspect and adjust brake switch
  3. Test switch signal to PCM
  4. Replace brake switch if faulty
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Other Powertrain codes on this vehicle

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