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2022 HYUNDAI TUCSON
2.5L I4•AWD•AUTOMATIC•gas
3 active safety recalls on this vehicle — view recalls
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Repairs425Labor500Torque4435Fluid9DTC1493Battery1Maintenance0Recalls3
P0703moderate severityPowertrain

Torque Converter/Brake Switch B Circuit

on 2022 Hyundai Tucson 2.5L I4 · AWD

What this code means

The PCM detected a fault in the brake switch B circuit used for torque converter and cruise control functions. This may affect shift and lockup operation.

Symptoms

  • Cruise control inoperative
  • Erratic torque converter lockup
  • Check engine light on

Common causes

  • Faulty brake light switch
  • Wiring fault in brake switch circuit
  • Corroded connector
  • Blown brake circuit fuse

Diagnostic steps

  1. Scan and confirm P0703 code
  2. Test brake switch operation
  3. Inspect brake switch wiring and connectors
  4. Check related fuses and grounds
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