Wheel Speed Sensor Failure - Circuit Range/Performance
The wheel speed sensor circuit is not performing as expected.
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What it means (plain English)
The system checks the wheel speed sensors and finds one is giving readings that are out of the normal range.
What the computer is actually seeing
The ABS control module sees a wheel speed reading that is either too high or too low compared to the expected values set for normal operation, indicating a failure in one or more sensors or their circuits.
What a healthy reading looks like
Normal wheel speed sensor output is between 0.5 to 2.0 volts at rest and should increase to around 5 volts at speeds above 10 mph.
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 wheel speed sensor wiring and connector for any visible damage or corrosion. Repair any issues found. Decision: If damaged, repair and retest. If not, proceed to Step 2.
- 22. Measure the output voltage of the wheel speed sensor with a multimeter. At rest, it should read between 0.5 to 2.0 volts. Decision: If voltage is within range, proceed to Step 3. If voltage is out of range, replace the wheel speed sensor and retest.
- 33. Check the integrity of the ABS control module grounds. Ensure connections are clean and tight. Decision: If ground connection is bad, fix it and retest. If good, check the ABS module itself.
Common causes
- Wiring issues (open, shorted, or corroded connections)
- Faulty wheel speed sensor
- Damaged ABS module
- Bad ground connection for the ABS system
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with C1155 code?
It's best to fix it soon; the ABS system may not function properly, increasing stopping distance.
Will this code come back after clearing it?
If the root cause isn’t fixed, yes, it will return.
Why is this related to other codes?
These codes often indicate problems with wheel speed sensors or the ABS module, affecting overall system performance.
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