Wheel Speed Sensor Failure
The wheel speed sensor for one wheel is not receiving a signal or has a fault.
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)
Inside the ABS module, the wheel speed sensors monitor how fast each wheel is turning. If one sensor fails or loses connection, it will send no signal or an incorrect signal to the module, causing the system to not work properly.
What the computer is actually seeing
The ABS control module expects a pulse signal from each wheel speed sensor when the wheels are turning. A missing or erratic signal indicates a problem. The module triggers this code if it detects that the signal is below a specific threshold for more than a second.
What a healthy reading looks like
The module typically expects a voltage signal between 0.5V to 5V from the wheel speed sensor, with clear pulses indicating wheel rotation.
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 wiring and connector for the affected wheel speed sensor. Look for any signs of damage, corrosion, or loose connections. If okay, proceed to the next step.
- 22. Check the resistance of the wheel speed sensor using a multimeter. You should see a resistance value typically between 1,000 and 2,500 ohms. If resistance is out of range, replace the sensor.
- 33. If the sensor is okay, check the sensor output while spinning the wheel. Use a scan tool or oscilloscope to see if there is a pulse signal. If no signal, replace the sensor.
- 44. If the sensor is producing a signal, check the ABS module for any internal faults. Review additional codes and scan data.
- 55. If all checks pass and the code persists, consider testing or replacing the ABS module.
Common causes
- Broken or damaged wheel speed sensor
- Corroded or loose wiring/connector
- Faulty ABS module
- Dirty sensor or reluctor ring
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
It can be, but without a functioning ABS system, you may lose traction control and ABS features, increasing the risk of skidding, especially in wet conditions.
Will this code come back after clearing?
Yes, if the underlying issue isn’t fixed, the code will likely return after clearing.
Why is this code triggering with a specific wheel sensor?
Each wheel has its own sensor; if one fails or a connection to it is lost, the ABS module detects inconsistency and triggers this fault code.
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