ABS Wheel Speed Sensor Communication Error
There’s a communication issue with the ABS wheel speed sensor.
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 (Anti-Lock Braking System) is trying to read the speed of a wheel from a sensor, but it's not getting the expected signals, which can affect braking performance.
What the computer is actually seeing
The ABS control module is not receiving valid data from one or more wheel speed sensors. This could be seen as dropped signals or data that's out of expected range.
What a healthy reading looks like
A healthy wheel speed sensor signal should be a near-constant voltage (5V) signal that fluctuates based on wheel speed, approximately 0-20Hz at low speeds, increasing as speed rises.
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 vehicle’s battery voltage at the ABS module connector; should be above 12.5V. If low, charge or replace the battery.
- 2Inspect the wiring and connectors for damage, corrosion, or loose connections leading to the wheel speed sensor. Repair as necessary.
- 3Using a scan tool, check for additional codes that might indicate which specific wheel sensor is causing the issue; take note of the wheel speed values during a test drive.
- 4If voltages/signals appear normal but still have the code, test the wheel speed sensor using a multimeter; it should show an appropriate frequency when the wheel is turned.
Common causes
- Failed wheel speed sensor
- Corroded or damaged wiring/connectors
- Faulty ABS control module
- Poor ground connection to the ABS module
- Intermittent signal interference
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I keep driving with this code?
Yes, but be cautious as ABS functionality may be reduced, which could affect safety during braking.
Will the code come back after clearing it?
If the underlying issue isn't fixed, it will likely return after driving for a short period.
Why are multiple wheel speed sensor codes showing up?
That often means there’s a common issue affecting communication for all sensors, like a wiring problem or a failing ABS module.
Working a real vehicle right now?
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