Wheel Speed Sensor 2 Performance Problem
A fault in the performance of the second wheel speed sensor has been detected.
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 computer is getting incorrect or inconsistent readings from the second wheel speed sensor, which measures how fast the wheel is turning.
What the computer is actually seeing
The Electronic Control Unit (ECU) expects the second wheel speed sensor to output a consistent voltage signal that varies with speed. For instance, at 30 mph, the expected signal might be around 2.5 volts. If it gets intermittent readings or a voltage outside the expected range, it sets this code.
What a healthy reading looks like
Should consistently output a voltage between 0.5V to 5V based on wheel speed; should vary smoothly with no sudden jumps or drops.
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 second wheel speed sensor. Look for signs of damage or corrosion. If found, repair or replace as needed. DECISION: If wiring and connectors are good, move to step 2.
- 22. Check the resistance of the wheel speed sensor. It should typically be between 1,000 to 2,500 ohms. If resistance is outside this range, replace the sensor. DECISION: If resistance is good, proceed to step 3.
- 33. Use a scan tool to monitor the live data from the second wheel speed sensor while the vehicle is moving. Look for consistent output values. If you're seeing jumps or dropouts, the sensor is likely faulty. DECISION: If values are inconsistent, replace the sensor; if they're steady, check the ABS module.
Common causes
- Wiring issues (damaged, frayed, or corroded wires)
- Faulty wheel speed sensor
- Poor connector contacts (corrosion or loose connections)
- ABS module failure
- Brake system issues
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderately safe, but you may experience issues like loss of traction control and ABS functionality. Fix it soon.
Will this code come back after I clear it?
If the underlying issue isn’t fixed (like a faulty sensor or wiring issue), it will likely return.
Why does this code often pair with others?
Wheel speed sensors affect multiple systems like ABS, traction control, and stability control, so their failures can trigger related codes.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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