Wheel Speed Sensor 'B' Circuit Range/Performance Problem
Indicates a problem with the rear wheel speed sensor 'B' circuit.
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 rear wheel speed sensor 'B' isn't sending the right signal to the computer, meaning the system isn't sure how fast that wheel is spinning.
What the computer is actually seeing
The computer expects a voltage signal from the wheel speed sensor that varies with speed; for example, at 10 mph, it should see around 2.5 volts, and at 60 mph, it should see about 10 volts. If the voltage stays constant or is outside the normal range, this code triggers.
What a healthy reading looks like
Typically, the signal should fluctuate between 0 to 12 volts based on wheel speed. At 0 mph, the voltage can be less than 0.5 volts, gradually increasing as speed rises.
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 at the wheel speed sensor 'B'. Look for frayed wires or corrosion.
- 22. Check the resistance and output voltage from the sensor with a multimeter. Expected range is 500-3000 ohms for resistance.
- 33. If the sensor checks out, proceed to inspect the ABS module for proper operation.
- 44. Clear the code and perform a road test to see if it returns. If it does, consider replacing the sensor.
- 55. If the code does not return, monitor the system for any further issues.
Common causes
- Damaged wheel speed sensor
- Wiring or connector issues
- Corroded terminals
- Faulty ABS module
- Faulty wheel bearing with integrated sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
Yes, but the ABS may not function correctly. Drive cautiously until repaired.
Will this code come back after clearing it?
If the underlying issue isn't fixed, it likely will reappear after a short while.
Why does this code sometimes pair with other codes?
Other codes can indicate related issues within the ABS system or with other wheel speed sensors.
Working a real vehicle right now?
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