Wheel Speed Signal Missing
The vehicle's computer isn't getting a speed signal from one or more wheel speed sensors.
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 system relies on wheel speed sensors to detect how fast each wheel is turning. If any sensor isn't sending a signal or is damaged, the computer can't get accurate speed data, which could affect braking and traction control systems.
What the computer is actually seeing
The computer expects a voltage signal from the wheel speed sensors that typically varies between 0V to about 5V depending on speed. If no signal is detected for a certain period (about 1 second), it triggers this code.
What a healthy reading looks like
Expected signal voltage from wheel speed sensors should be around 0.5V to 4.5V while moving, and about 0V when stationary.
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.
- 1Inspect wiring and connectors leading to the wheel speed sensors for damage or corrosion. Look for any signs of fraying or loose connections. If any issues are found, repair them and retest.
- 2Using a multimeter, check each wheel speed sensor for continuity. Verify voltage output while performing a manual wheel rotation test. Should see a variance in voltage from 0.5V to 4.5V. If any sensor is out of spec, replace it.
- 3Check the ABS module for faults. If the ABS module is faulty and failing to relay signals, replace the module.
Common causes
- Damaged or corroded wiring to the wheel speed sensor
- Faulty wheel speed sensor
- Failed ABS module
- Poor vehicle ground connections
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s best not to drive as braking and traction control may be affected, which can increase the risk of accidents.
Will this code come back after I clear it?
If the root cause isn't fixed, the code will likely return. Make sure to diagnose properly before clearing.
Does this relate to the ABS system?
Yes, it can affect the ABS system as it relies on wheel speed signals for operation.
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