P0719 OBD II Trouble Code Torque Converter/Brake Switch B Circuit Low

Symptoms of P0719 OBD II Trouble Code

  • Engine stalling when the vehicle rolls to a stop
  • TCC lockup may be disabled
  • Diminished fuel efficiency
  • Decreased engine performance (especially at highway speeds)
  • Erratic transmission shift patterns
  • No stop lamp illumination

Common Causes of P0719 OBD II Trouble Code

  • Defective brake switch
  • Misadjusted brake switch
  • Shorted or open wiring and/or connectors in the brake switch circuit designated as B
  • Blown fuse or burnt fusible link
  • Faulty PCM or PCM programming error

Severity of P0719 OBD II Trouble Code

This code should be treated as urgent because severe internal transmission damage could result if the TCC lockup is inoperable over a long period of time. Most models are designed so that the PCM will disable TCC lockup, and place the transmission control system in limp-in mode, if a code of this type is stored.