ABS Wheel Speed Sensor 2 Input Signal Incorrect
The ABS control module detected an incorrect signal from the wheel speed sensor 2.
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What it means (plain English)
The ABS system uses sensors to check how fast each wheel is turning. If one sensor sends a wrong signal, the ABS module throws this code and may affect brake performance.
What the computer is actually seeing
The ABS module expects a consistent voltage signal from wheel speed sensor 2, typically around 0.5 to 5 volts, depending on the wheel speed. If the signal is out of range, it triggers this code.
What a healthy reading looks like
Wheel speed should match vehicle speed; at a standstill, voltage should be near 0V, increasing with wheel speed up to about 5V at high speeds.
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. Check the vehicle's wheel speed sensor 2 wiring for any visible damage or corrosion.
- 22. Use a multimeter to measure the voltage at the wheel speed sensor 2 connector; it should be in the range of 0.5V to 5V when the wheel is turning. If it's outside this range, proceed to step 3.
- 33. Inspect the connector for loose pins or moisture; repair as necessary. Then retest the voltage.
- 44. If wiring and connections are good, swap the wheel speed sensor 2 with another sensor (if available) and see if the code changes or a different sensor code appears.
- 55. If issues persist, consider scanning for additional codes that may indicate a problem with the ABS module itself.
Common causes
- Damaged wheel speed sensor 2
- Faulty wiring or poor connections to the wheel speed sensor 2
- Differences in tire size between wheels affecting speed readings
- Defective ABS control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Driving can be safe, but without proper ABS function, brakes may not perform optimally in slippery conditions, so fix it soon.
Will this code come back after I fix it?
If the underlying problem is resolved, the code shouldn't return; clear it after repairs to verify.
Why does this code pair with others?
Wheel speed issues can affect multiple system functions, causing various codes to appear if there's a common underlying fault.
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