ABS Wheel Speed Sensor Error
There is a fault detected in the ABS 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 ABS system checks how fast each wheel is turning using sensors. If one of these sensors isn't working right, it stops the ABS from working properly and could cause problems with braking.
What the computer is actually seeing
The ABS control module sees inconsistent or missing signals from the wheel speed sensor. For example, it may expect a signal that reads 0 to 12 volts when the wheel is moving, and if it reads 0 volts or stays stuck at a certain number, it triggers the code.
What a healthy reading looks like
Wheel speed sensors should output a voltage signal that varies between 0 and 12 volts depending on wheel speed, averaging around 5 volts in motion.
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 connectors for the affected wheel speed sensor. Look for corrosion, fraying, or loose connections. If found, repair as necessary. Decision: If wiring is good, move to step 2.
- 22. Measure the output voltage of the wheel speed sensor while the wheel is turning. Voltage should vary between 0 and 12 volts. If it does not, replace the wheel speed sensor. Decision: If voltage is normal, move to step 3.
- 33. Check for any ABS module fault codes with a scan tool. If other codes are present, address those issues as they may contribute to the sensor fault. Decision: If no other codes, consider testing the sensor with a multimeter or oscilloscope for failure.
Common causes
- Faulty wheel speed sensor
- Damaged wiring or connectors to the sensor
- Dirty or obstructed sensor
- Issues with the ABS control module
- Incorrect tire sizes or mismatched tire pressures
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It can be drivable, but without ABS, your braking distance may be affected, especially in slippery conditions.
Will this problem come back after being cleared?
If the underlying issue isn't resolved, yes, the code will likely return.
Why does this code appear with multiple wheel sensors?
It often indicates a systemic issue, like a bad ABS module or power supply affecting multiple sensors.
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