Vehicle Speed Sensor Range/Performance Problem
Issues with the vehicle speed sensor signal processing.
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 (VSS) isn't sending correct signals to the computer; it may read speed inconsistently or not at all, affecting transmission shifting and speedometer accuracy.
What the computer is actually seeing
The powertrain control module (PCM) expects a consistent frequency signal from the VSS that correlates to vehicle speed—typically 400-800 Hz at 60 mph. If the signal deviates significantly, a fault code triggers.
What a healthy reading looks like
The VSS should output a signal frequency between 400 to 800 Hz at speeds around 60 mph; voltage typically should be between 0.2V (stopped) and 5V (maximum 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. Inspect the VSS wiring and connectors for damage or corrosion. Fix any issues found.
- 22. Check the VSS output with a multimeter while the vehicle is in motion. Are you getting the expected frequency around 400-800 Hz? If not, VSS is likely bad.
- 33. If VSS output is correct, check the PCM input for VSS signal. Is it receiving consistent and correct data? If not, focus on the PCM or its wiring.
- 44. Clear the code and test drive the vehicle. Does the code return? If it does, replace the VSS; if not, monitor for further issues.
Common causes
- Faulty vehicle speed sensor
- Damaged wiring or connectors in the VSS circuit
- Faulty PCM
- Interference from other electrical components
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but it can lead to erratic shifting and inaccurate speedometer readings, so fix it soon.
Will the problem come back if I clear the code?
If the underlying issue isn't fixed, yes, the code will likely return.
Why does it pair with other codes?
Issues with the VSS often affect multiple systems; other codes can indicate failures in related components.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →