Vehicle Speed Sensor Malfunction
There’s a problem with the vehicle speed sensor signal.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The vehicle speed sensor sends data to the computer about how fast the vehicle is moving. If it’s not working right, the computer gets inaccurate speed readings.
What the computer is actually seeing
The computer is expecting a pulse frequency correlating to vehicle speed, typically between 0 to 5 volts, where 0V means stopped and 5V indicates maximum speed.
What a healthy reading looks like
Pulse frequency corresponding to vehicle speed - usually 0-5 volts based on actual speed.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check wiring and connections for damage or corrosion. Look for frays, breaks, or loose connections immediately.
- 2Inspect the vehicle speed sensor physically; ensure it's not loose or full of dirt/debris.
- 3Test the voltage at the speed sensor connector; you should see a voltage pulse when the vehicle is moving. If not, proceed to testing the sensor itself.
- 4If the wiring and connector are fine and the sensor fails to send a pulse, replace the speed sensor. After replacement, clear the code and test drive the vehicle to verify that the issue is resolved.
Common causes
- Wiring damage or corrosion
- Faulty vehicle speed sensor
- Bad connector or harness issue
- Software issue in the vehicle's control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable, but you may experience incorrect speed readings and transmission issues.
Will this code come back after a reset?
If the issue isn't fixed, the code will likely return after some driving.
Why does this code sometimes pair with transmission issues?
The speed sensor affects transmission shifting; incorrect signals can lead to poor shifting performance.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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