Vehicle Speed Sensor Input Circuit Range/Performance Problem
Issues detected in the vehicle speed sensor input signal.
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What it means (plain English)
The vehicle speed sensor is sending a signal that isn’t matching expected parameters, which could indicate a sensor issue or wiring problem.
What the computer is actually seeing
The PCM expects a varying voltage signal from the vehicle speed sensor that corresponds to vehicle speed changes. For instance, a fully stopped vehicle could read around 0 volts, while speeds over 60 mph might see voltages close to 5 volts or more depending on the system design.
What a healthy reading looks like
Voltage readings from the vehicle speed sensor should be between 0.5V and 4.5V while driving, correlating with 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 the vehicle's wiring and connectors for the speed sensor for any damage or corrosion. Repair or replace if found.
- 2Verify the vehicle speed sensor operation with a multimeter; ensure the voltage responds as speed changes, typically 0-4.5 volts.
- 3Inspect tire size and verify it matches the manufacturer's specifications since incorrect tire sizes can skew speed readings.
- 4Use a scan tool to check for related DTCs that might point to the root cause like a failing PCM or other sensors.
Common causes
- Faulty vehicle speed sensor
- Damaged wiring or connectors
- Incorrect tire size or ratio
- Faulty PCM
- Mechanical issues in transmission affecting sensor operation
Typical repair cost
$$-$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally safe to drive, but you may experience abnormal speedometer behavior and potential shifting issues.
Will this code come back after clearing it?
If the underlying issue isn't resolved, the code will likely return after some driving.
Could this code be related to transmission issues?
Yes, mechanical problems in the transmission can affect the sensor's reading, so checking that area is crucial.
Working a real vehicle right now?
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