ABS System Calibration Error
The C0134 code means the vehicle's onboard diagnostic system has detected: ABS System Calibration Error. This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- hard
- Estimated cost
- $50 - $400 (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
- Traction control light on
- ABS activates at inappropriate times
- Vehicle pulls during ABS activation
- ESC system malfunction message
Probable Causes (Ranked by Likelihood)
- ABS module lost calibration data Very High
- Mismatched tire sizes affecting calibration High
- ABS module not recalibrated after service Moderate
- ABS control module internal memory fault Low
Step-by-Step Diagnostic Procedure
-
Scan ABS module for calibration DTCs
-
Verify all four tires are same size and properly inflated
-
Attempt ABS module recalibration with scan tool
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Check for recent brake or suspension service that requires recalibration
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Verify steering angle sensor is calibrated
Frequently Asked Questions
What causes ABS calibration to be lost?
A dead battery, battery disconnect, or ABS module power interruption can erase stored calibration data. Some systems require recalibration after certain repairs like wheel alignment or sensor replacement.
Can different tire sizes trigger this code?
Yes. The ABS system expects all four wheels to rotate at similar speeds. Mismatched tire sizes or diameters cause speed differences that confuse the calibration.
Can I recalibrate the ABS system myself?
A professional scan tool is usually required to perform ABS module calibration. Some vehicles require a specific drive procedure after clearing the code to complete automatic recalibration.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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