Lost Communication With Lateral Acceleration Sensor Module
What it means
U0124 means the vehicle has lost communication with the lateral-acceleration sensor module — the sensor that measures side-to-side (cornering) forces for the stability-control system. Without its data, electronic stability and traction control usually shut down and warning lights come on. The car still drives, steers, and brakes normally, but without those safety aids. The cause is typically a wiring, connector, power/ground, or bus fault.
Can I keep driving? Yes — normal driving and braking still work, but stability and traction control are likely disabled, so take extra care in slippery or hard-cornering conditions until fixed.
Common symptoms
What you'll notice
- ABS, traction, and stability-control (ESC) warning lights on
- Stability and traction control disabled
- Possible ABS warning as well
- Scan tool can't reach the lateral-acceleration sensor module
Common causes
Most likely first
- Wiring or connector fault at the sensor moduleLikely
- Power or ground problem to the moduleCommon
- Failed lateral-acceleration (yaw/G) sensor moduleCommon
- CAN bus fault shared with the stability-control systemLess often
How to diagnose & fix
Work through it in order
- Scan for related ABS/stability codes and any other U-codes.
- Inspect the connector and wiring at the sensor module.
- Check the module's power and ground.
- Verify bus communication and repair any wiring fault.
- Replace the sensor module if it's confirmed faulty, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with U0124?+
Can I just clear U0124?+
Related codes
Often seen with U0124
Read & clear U0124 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.