What Does U0125 Mean?
The vehicle's control network has lost communication with the multi-axis acceleration sensor module. This sensor measures acceleration forces in multiple directions simultaneously for advanced stability and safety systems.
Safety Warning
Multiple safety systems including stability control, rollover protection, and advanced driver assistance systems will be disabled. Vehicle will lack critical motion sensing for accident prevention.
Common Causes
40%
Defective multi-axis acceleration sensor module with internal component failure
25%
Damaged or corroded sensor module connector
20%
CAN bus or sensor communication wiring damage
10%
Power or ground circuit fault at sensor module
5%
Control module (ABS/stability) communication circuit failure
Diagnostic Steps
1
Step 1: Locate multi-axis sensor (typically center of vehicle under console or dash) and inspect connector for physical damage or corrosion
2
Step 2: Test power and ground circuits at sensor with multimeter; verify correct voltage present
3
Step 3: Monitor communication circuit voltage levels at sensor connector with key on
4
Step 4: Use scan tool to view live sensor data while tilting or moving vehicle to verify sensor responds to motion in multiple axes
5
Step 5: Check wiring harness from sensor to control modules for continuity, shorts, and proper CAN bus resistance values
Estimated Repair Cost
$200 - $900
Parts + labor, varies by vehicle and location
The vehicle's control network has lost communication with the multi-axis acceleration sensor module. This sensor measures acceleration forces in multiple directions simultaneously for advanced stability and safety systems.
The most common cause of U0125 (Lost Communication With Multi-axis Acceleration Sensor Module) is: Defective multi-axis acceleration sensor module with internal component failure
Typical repair costs for U0125 range from $200 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Multiple safety systems including stability control, rollover protection, and advanced driver assistance systems will be disabled. Vehicle will lack critical motion sensing for accident prevention.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0125 to identify the root cause.
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Quick Info
Category
Network
System
Vehicle Dynamics / Stability Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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