Vehicle Speed Sensor (VSS) Signal Intermittent
Indicates an intermittent signal from the vehicle speed sensor.
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 is sending an inconsistent signal to the computer, leading to problems in managing speed-related functions.
What the computer is actually seeing
The vehicle computer monitors the voltage signal from the speed sensor. Ideally, a stable signal between 0.5 to 2.5 volts indicates correct function. If the signal drops out intermittently, it triggers this code.
What a healthy reading looks like
Voltage from the vehicle speed sensor should be between 0.5V (at 0 mph) and 2.5V (at max 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.
- 11. Check the vehicle speed sensor wiring for breaks or frays. If found, repair the wiring.
- 22. Inspect the connectors at the speed sensor for corrosion or looseness. Tighten or clean as needed.
- 33. Measure voltage at the vehicle speed sensor connector; it should vary from 0.5V to 2.5V as the speed changes. If not, the sensor is likely faulty.
- 44. Check for any additional codes in the system that may indicate related issues. Address them first before proceeding.
Common causes
- Faulty vehicle speed sensor
- Bad wiring or connectors
- Low battery voltage or grounding issues
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It is generally safe to drive, but you'll experience issues like erratic speedometer readings and potential stability control problems.
Will this code come back after clearing it?
Yes, if the underlying issue isn't resolved, the code is likely to return.
Why does this signal affect other systems?
Many systems rely on vehicle speed information, including cruise control, transmission shift points, and traction control.
Working a real vehicle right now?
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