ABS Wheel Speed Sensor Circuit Failure - Data Erratic, Intermittent or Incorrect
This code indicates an issue with the ABS wheel speed sensor or its 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 ABS module isn't getting a consistent signal from the wheel speed sensor, which affects braking performance and stability control.
What the computer is actually seeing
The ABS control module detects that the input from the wheel speed sensor is erratic or intermittent, causing concerns over the vehicle's stability and braking efficiency.
What a healthy reading looks like
Voltage at the sensor should be between 0.5V to 12V; resistance should be around 1000 ohms; the signal frequency should be stable above 1Hz depending on speed.
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 damage or corrosion.
- 22. Check the ABS wheel speed sensor: unplug it, then measure resistance across its terminals, expecting around 1000 ohms.
- 33. With the vehicle running, check the sensor voltage while the wheel is spinning, looking for a 0.5V to 12V signal.
- 44. If resistance or voltage is out of expected range, replace the sensor and retest.
- 55. Clear the fault codes and perform a road test to see if the code reappears.
Common causes
- Damaged or corroded wiring
- Faulty wheel speed sensor
- Bad connector or loose connection
- Moisture intrusion into the sensor connector
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderately unsafe; you may experience reduced braking effectiveness or ABS malfunction.
Will this code come back after fixing?
If the repair is done correctly, it should not return, but ensure all connections are secure.
Why does this code pair with SPN 341?
SPN 341 indicates a similar issue with the left front or right front wheel, pointing to common wiring or sensor issues.
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 →