Torque Converter/Brake Switch B Circuit High
What does P0724 mean?
The P0724 code means the vehicle's onboard diagnostic system has detected: Torque Converter/Brake Switch B Circuit High. This is a moderate severity code.
Common Symptoms
- Check Engine Light illuminated
- Brake lights stay on constantly
- Cruise control will not engage
- Torque converter clutch stays released
Probable Causes (Ranked by Likelihood)
- Misadjusted brake light switch (always closed) Very High
- Short to voltage in brake switch circuit High
- Faulty brake light switch stuck closed Moderate
- TCM input circuit fault Low
Step-by-Step Diagnostic Procedure
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Check if brake lights are on with the pedal released -- if so, the switch is misadjusted or stuck
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Adjust the brake light switch so it releases when the pedal is in the rest position
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Check for short to voltage in the brake switch wiring
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Replace the brake switch if adjustment does not resolve the issue
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Verify the fix by checking that cruise control engages normally
Frequently Asked Questions
Can I drive with code P0724?
Drive short distances only. Torque Converter/Brake Switch B Circuit High can cause unsafe or unpredictable transmission behavior.
What causes P0724?
The most common cause is a faulty sensor or wiring issue. Misadjusted brake light switch (always closed) is the most likely cause.
Is P0724 expensive to fix?
Typical repair costs range from $20 - $120 (parts and labor). Sensor replacement is the most common fix.