The P0724: Torque Converter/Brake Switch B Circuit High indicates that the torque converter or brake switch B circuit is sending a signal that is too high. This can affect the torque converter’s ability to disengage when the brakes are applied, causing drivability issues. The problem may be caused by a faulty switch or wiring issues.
P0724 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0724: Torque Converter/Brake Switch B Circuit High |
| Is it serious? | Yes, as it can lead to improper transmission disengagement, which could affect vehicle performance and safety. |
| Possible causes | – High signal from torque converter/brake switch B – Faulty switch – Wiring or connector issues |
| How to diagnose? | – Test the switch for high signal – Inspect wiring and connectors – Replace switch if necessary |
P0724 Meaning
The P0724 code is triggered when the torque converter or brake switch B circuit is sending a signal that is too high to the transmission control module (TCM). The brake switch plays a critical role in signaling the TCM to disengage the torque converter when the brakes are applied. A high signal may indicate a malfunction in the switch or related wiring.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any other related codes that may give further information on the issue. | OBD-II Scanner |
| Test the Brake Switch for High Signal | Use a multimeter or diagnostic tool to measure the voltage or signal output from the brake switch B. Compare the readings with manufacturer specifications to determine if the signal is too high. | Multimeter, Diagnostic Tool |
| Inspect Wiring and Connectors | Inspect the wiring and connectors for signs of damage, corrosion, or loose connections that may cause a high signal. | Flashlight, Multimeter |
| Inspect Brake Switch B Alignment | Check that the brake switch is properly aligned and not sticking, as improper alignment can cause incorrect signals. | Basic Tools |
| Replace the Switch if Necessary | If the brake switch is faulty and producing a high signal, replace it with a new switch to restore proper function. | Replacement Parts, Standard Tools |
| Clear Code and Retest | After repairs, clear the P0724 code using an OBD-II scanner and take the vehicle for a test drive to ensure the issue is resolved. | OBD-II Scanner |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure the P0724 code has not returned. | OBD-II Scanner |
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