Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Code 24: Vehicle Speed Sensor (VSS)
Code 24 will set if VSS indicates less than one MPH when engine speed is greater than normal idle RPM, MAP voltage is less than .5 volt and transaxle is not in Park or Neutral. Speed sensor is mounted on differential area of transaxle converter housing. PM generator speed sensor resistance is 700-900 ohms.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.