Wheel Speed Sensor 1 Circuit Performance Problem
This code indicates a fault in the performance of the wheel speed sensor circuit for wheel 1.
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 wheel speed sensor for wheel 1 can't send a proper signal to the computer, which typically means it's not reading the wheel's speed accurately. It should detect between 0 and 12 volts as the wheel turns.
What the computer is actually seeing
The ABS module expects a varying voltage signal from the wheel speed sensor based on the wheel's rotation. If the voltage stays too low (below 0.5V) or too high (above 11.5V) when the wheel is turning, it triggers this fault code.
What a healthy reading looks like
Normal wheel speed readings should fluctuate between 0.5V to 11.5V as the vehicle moves; a reading close to 0V or a fixed voltage suggest sensor or wiring issues.
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.
- 1Check the wiring and connectors at the wheel speed sensor for damage or corrosion. Ensure they're making good contact.
- 2With the ignition on, measure the voltage at the wheel speed sensor connector. It should change as the wheel is rotated, reading between 0.5V and 11.5V.
- 3If voltage is stable and within the normal range, check the ABS module for fault codes related to the sensor. If this code appears alongside others for the same wheel, consider replacing the sensor. If under warranty, proceed with replacements as needed.
- 4If the sensor and wiring check out, test the ABS module functionality with a scan tool.
Common causes
- Failed wheel speed sensor
- Damaged wiring or connectors
- Corroded terminals
- Faulty ABS module
- Incorrect installation of the sensor
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally safe to drive, but braking performance, especially in conditions requiring ABS, may be compromised.
Will this code come back after clearing it?
If the underlying issue isn't fixed, yes, the code will likely reappear.
Why does this code sometimes pair with traction control issues?
Both systems rely on accurate wheel speed data to function properly, so a failure in one can affect the other.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →