P0719 moderate

Torque Converter/Brake Switch B Circuit Intermittent

The P0719 code means the vehicle's onboard diagnostic system has detected: Torque Converter/Brake Switch B Circuit Intermittent. This is a moderate severity code.

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Keep driving?
Yes, but fix soon
DIY difficulty
easy
Estimated cost
$20 - $120 (parts and labor)
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Common Symptoms

  • Check Engine Light illuminated intermittently
  • Cruise control cuts out randomly
  • Brake lights flicker
  • Occasional engine stumble when stopping

Probable Causes (Ranked by Likelihood)

  • Worn brake light switch with intermittent contact Very High
  • Loose brake switch connector High
  • Intermittent break in brake switch wiring Moderate
  • Brake pedal bushing wear affecting switch contact Moderate

Step-by-Step Diagnostic Procedure

  1. Press the brake pedal repeatedly while watching brake lights for flickering

  2. Wiggle the brake switch connector while monitoring the switch signal

  3. Check the brake pedal bushing -- a worn bushing changes pedal travel and switch contact

  4. Inspect brake switch wiring at the pedal area for damage

  5. Replace the brake light switch if intermittent contact is confirmed

Frequently Asked Questions

Can I drive with code P0719?

Drive short distances only. Torque Converter/Brake Switch B Circuit Intermittent can cause unsafe or unpredictable transmission behavior.

What causes P0719?

The most common cause is a faulty sensor or wiring issue. Worn brake light switch with intermittent contact is the most likely cause.

Is P0719 expensive to fix?

Typical repair costs range from $20 - $120 (parts and labor). Sensor replacement is the most common fix.

Sources

This page is built from documented references. Verify against your own service info before repair work.

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