Invalid Data Received from Vehicle Speed Sensor
The ECM is receiving invalid signals from the vehicle speed sensor.
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What it means (plain English)
The vehicle speed sensor's readings are messed up; it might be sending garbage data to the engine control module (ECM).
What the computer is actually seeing
The ECM expects a vehicle speed signal in a specific voltage range (usually around 0.5 to 4.5 volts), but it's getting an out-of-range value or a constant signal instead of a variable one.
What a healthy reading looks like
Voltage from the speed sensor should be between 0.5V (at stop) to 4.5V (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 wiring and connectors to the vehicle speed sensor for damage or corrosion. Fix any issues found.
- 22. Measure the output voltage from the speed sensor while the vehicle is moving. It should vary between 0.5 to 4.5 volts.
- 33. If the voltage is out of range, replace the vehicle speed sensor. If the voltage is correct, suspect the ECM or wiring issues.
- 44. Clear the fault codes and test drive the vehicle to see if the code returns.
Common causes
- Faulty vehicle speed sensor
- Damaged wiring or connectors
- Malfunctioning ECM
- Incorrectly calibrated speed sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; the vehicle may experience speedometer issues, but it's generally safe. Fix it soon.
Will this code come back after repairs?
If the repairs are done correctly and the underlying issue is fixed, it should not return.
Why does this code happen with other codes?
Related codes often indicate a broader issue with the speed sensing system, like wiring faults affecting multiple readings.
Working a real vehicle right now?
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