Lost Communication With Lateral Acceleration Sensor Module
The U0124 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Lateral Acceleration Sensor Module. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $150 - $500 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Stability control system disabled
- ESC warning light on
- Traction control warning light on
- Rollover protection system may be disabled
- ABS light may be illuminated
Probable Causes (Ranked by Likelihood)
- Failed lateral acceleration sensor Very High
- Damaged wiring to lateral G sensor High
- Corroded connector at lateral acceleration sensor Moderate
- Sensor mounting bracket loose or broken Moderate
- Water damage to lateral acceleration sensor Low
Step-by-Step Diagnostic Procedure
-
Scan all chassis and stability control modules for DTCs
-
Locate the lateral acceleration sensor -- usually near the center of the vehicle
-
Inspect the sensor connector for corrosion or loose pins
-
Check power supply and ground at the sensor
-
Verify the sensor is securely mounted with no loose bolts
Frequently Asked Questions
Can I drive with code U0124?
You can drive short distances cautiously. The stability control system is disabled, meaning the vehicle lacks electronic rollover and skid protection. Avoid aggressive driving.
What is the lateral acceleration sensor?
The lateral acceleration sensor measures side-to-side forces on the vehicle during turns. It provides data to the stability control system to help prevent rollovers and loss of control in curves.
Is U0124 expensive to fix?
The lateral acceleration sensor itself typically costs $100 to $300, with labor adding another $50 to $200. Total repair cost is usually $150 to $500.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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