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.
Circuit Description
Vehicle speed sensor outputs a 4-pulse input signal for every revolution of the drive gear in transmission to the instrument cluster where input signal is converted to a rectangular waveform and then sent to ECM. ECM determines vehicle speed by using input signal. DTC is set if there is no vehicle speed signal to ECM while vehicle is being driven and park/neutral position switch is off. Possible causes are:
- Defective vehicle speed sensor.
- Vehicle speed sensor circuit is open or shorted.
- Defective instrument cluster.
- Defective ECM.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.