ABS System Control Circuit Range/Performance
The C0031 code means the vehicle's onboard diagnostic system has detected: ABS System Control Circuit Range/Performance. This is a critical severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $300 - $1400 (parts and labor)
Basic scanners cannot read ABS codes. BlueDriver reads all systems including ABS, SRS, and transmission through your phone.
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Basic scanners cannot read ABS codes. This one reads all four systems so you know exactly which sensor failed.
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Common Symptoms
- ABS warning light on
- ABS activates at wrong times
- Brake pedal pulsation during normal braking
- Traction control erratic
Probable Causes (Ranked by Likelihood)
- Degraded ABS control module Very High
- Intermittent sensor signal issues High
- Software calibration mismatch Moderate
- Electrical noise on ABS circuits Low
Step-by-Step Diagnostic Procedure
-
Monitor all ABS sensor inputs on scan tool
-
Check for intermittent sensor signals during driving
-
Verify ABS module software version and calibration
-
Look for electrical noise on ABS circuits with oscilloscope
Frequently Asked Questions
Why does ABS activate during normal braking?
The module is receiving incorrect data making it think a wheel is locking up.
Does the ABS module need programming after replacement?
Yes, most modern ABS modules require programming or calibration to the specific vehicle.
Can I clear this code and see if it comes back?
Yes, clearing is a good diagnostic step. If it returns immediately, the problem is constant.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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