What Does U0124 Mean?
Communication with the lateral acceleration sensor module has been lost. This sensor measures side-to-side G-forces and is essential for stability control, rollover detection, and advanced safety systems.
Safety Warning
Stability control and rollover mitigation systems will be disabled. Vehicle will not detect lateral forces during cornering or rollover situations, eliminating critical safety interventions.
Common Causes
40%
Failed lateral acceleration sensor module with internal circuit failure
25%
Corroded or damaged sensor connector terminals and pins
20%
Communication circuit wiring damage or open circuit in sensor harness
10%
Sensor power supply or ground circuit failure
5%
Control module communication interface failure (ABS or stability control module)
Diagnostic Steps
1
Step 1: Locate lateral acceleration sensor (usually center console area or under a front seat) and inspect connector for corrosion or damage
2
Step 2: Verify power and ground at sensor connector using multimeter; should have battery voltage on power circuit
3
Step 3: Check sensor signal circuits for proper voltage levels with ignition on
4
Step 4: Use scan tool to monitor lateral acceleration sensor data while gently pushing vehicle side-to-side to verify sensor response
5
Step 5: Test communication circuit continuity from sensor to control module and check for short to ground or voltage
Estimated Repair Cost
$150 - $750
Parts + labor, varies by vehicle and location
Communication with the lateral acceleration sensor module has been lost. This sensor measures side-to-side G-forces and is essential for stability control, rollover detection, and advanced safety systems.
The most common cause of U0124 (Lost Communication With Lateral Acceleration Sensor Module) is: Failed lateral acceleration sensor module with internal circuit failure
Typical repair costs for U0124 range from $150 to $750, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Stability control and rollover mitigation systems will be disabled. Vehicle will not detect lateral forces during cornering or rollover situations, eliminating critical safety interventions.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0124 to identify the root cause.
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Quick Info
Category
Network
System
Stability Control / Vehicle Dynamics System
Difficulty
Type
Generic (SAE)
Recommended Tools
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