Vehicle Speed Sensor Out of Range
The vehicle's speed sensor is reporting an invalid speed.
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 measures how fast the truck is moving. If it sends readings that are too high or too low, the engine control module (ECM) gets confused and flags this code.
What the computer is actually seeing
The ECM expects the vehicle speed sensor to send a voltage signal that corresponds to the speed of the vehicle, typically between 0.5 to 4.5 volts at speeds between 0 and 100 mph.
What a healthy reading looks like
The vehicle speed should normally correlate directly with the voltage output of the speed sensor, ranging from 0 volts (0 mph) to about 4.5 volts (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 vehicle speed sensor wiring and connectors for damage or corrosion. If damaged, repair or replace.
- 22. Use a multimeter to check the voltage output of the speed sensor at various speeds. Expected voltage: 0.5 to 4.5 volts as speed increases.
- 33. If the voltage is out of range, replace the speed sensor. If within range, check the ECM for faults or reprogram if necessary.
Common causes
- Faulty vehicle speed sensor
- Damaged wiring or connectors to the sensor
- ECM software glitch
- Speed sensor drift or improper calibration
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; you can drive but should fix it soon to avoid other issues.
Will this code come back after clearing?
If the underlying issue is not fixed, yes, it can come back.
Why does this code appear alongside others?
Multiple codes may indicate a broader issue with the speed-related systems or wiring.
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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