Fix P0724: STEP-BY-STEP diagnostic GUIDE!

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

CodeInformation
MeaningP0724: 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

ActionDescriptionTools Needed
Check for Other CodesUse 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 SignalUse 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 ConnectorsInspect the wiring and connectors for signs of damage, corrosion, or loose connections that may cause a high signal.Flashlight, Multimeter
Inspect Brake Switch B AlignmentCheck that the brake switch is properly aligned and not sticking, as improper alignment can cause incorrect signals.Basic Tools
Replace the Switch if NecessaryIf 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 RetestAfter 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 CodesAfter the test drive, re-scan the vehicle to ensure the P0724 code has not returned.OBD-II Scanner
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