Wheel Speed Sensor 3 Circuit Failure
Indicates a problem with the wheel speed sensor 3 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 vehicle's computer is not getting a proper signal from the third wheel speed sensor, which is important for ABS and stability control systems to work safely.
What the computer is actually seeing
The computer expects a waveform signal that varies with wheel rotation speed. If the signal is constant at 0V or stays at a fixed value instead of fluctuating, it triggers this code.
What a healthy reading looks like
Wheel speed sensor signal should show a voltage range of 0V to 5V under normal conditions, changing with wheel speed. Expect a frequency of 0-10 Hz at a standstill, increasing as the vehicle moves.
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 for damage or corrosion. Repair as needed. Decision Point: If wiring is good, proceed to step 2.
- 2Test the wheel speed sensor output with a multimeter. You should see a voltage change as the wheel rotates. Decision Point: If you see no voltage change, the sensor may be faulty.
- 3If the sensor is good, connect a known good sensor to the circuit. If the code clears, replace the original sensor. Decision Point: If the code persists with a good sensor, suspect the ABS control module.
Common causes
- Broken sensor wires or connectors
- Damaged or dirty wheel speed sensor
- Faulty ABS control module
- Corroded terminals or connectors
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
Moderately safe, but you might lose ABS and traction control, increasing the risk in slippery conditions.
Will this problem come back after fixing?
If the root cause is properly addressed, it shouldn't return.
Why is this code appearing along with other sensor codes?
Sensor issues often occur together due to shared wiring or module problems.
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