Lost Communication With Multi-axis Acceleration Sensor Module
What does U0125 mean?
The U0125 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Multi-axis Acceleration Sensor Module. This is a moderate severity code.
Common Symptoms
- Stability control and traction control lights on
- ESC system disabled
- ABS warning light may be on
- Rollover detection system inoperative
- Vehicle hill-start assist may not work
Probable Causes (Ranked by Likelihood)
- Failed multi-axis acceleration sensor Very High
- Damaged wiring to acceleration sensor module High
- Corroded connector pins at sensor module Moderate
- Sensor calibration lost after battery disconnect Moderate
- Physical damage to sensor from road debris Low
Step-by-Step Diagnostic Procedure
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Scan for DTCs in chassis, ABS, and stability control modules
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Check the multi-axis sensor connector for corrosion or damage
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Verify power supply and ground at the sensor module
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Attempt sensor calibration using a factory scan tool
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Inspect the sensor and its mounting for physical damage
Frequently Asked Questions
Can I drive with code U0125?
You can drive short distances, but stability control, traction control, and rollover detection are disabled. Use extra caution, especially in SUVs and trucks that are more prone to rollovers.
What does the multi-axis acceleration sensor do?
The multi-axis sensor measures acceleration forces in multiple directions (forward/back, left/right, and up/down). It provides critical data for stability control, rollover prevention, and hill-start assist systems.
Can the sensor be recalibrated?
Sometimes. After a battery disconnect or sensor replacement, the multi-axis sensor may need calibration with a factory scan tool. This alone may resolve the code in some cases.