P0719 – Brake Switch B Low

Description

The ECM detects a low brake switch B signal affecting transmission.

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Symptoms

  • Harsh shifting
  • Cruise control disabled

Causes

  • Short to ground
  • Faulty switch
  • Wiring issues

Diagnosis

  • Monitor brake switch data
  • Inspect wiring
  • Check switch

Repair

  • Replace switch
  • Repair wiring