Lost Communication With Multi-axis Acceleration Sensor Module A
What it means
U0125 means a controller has lost communication with the multi-axis acceleration sensor module — the device that measures the vehicle's lateral, longitudinal, and yaw motion for the stability and ABS systems. Without its data, stability control, traction control, and ABS often shut off and warning lights come on. The engine still runs normally, but the car loses those safety aids, so it should be diagnosed promptly. It is usually a wiring, connector, or module fault.
Can I keep driving? Yes, but with reduced safety systems — the engine runs fine, but stability control, traction control, and ABS may be disabled until it's fixed, so drive gently.
Common symptoms
What you'll notice
- Stability control, traction control, and ABS warning lights on
- Stability and traction control disabled
- Check-engine or chassis warning light on
- The acceleration sensor module unresponsive to a scan tool
Common causes
Most likely first
- Damaged, corroded, or disconnected wiring or connector at the sensor moduleLikely
- Lost power or ground feed to the moduleCommon
- Failed multi-axis acceleration sensor moduleCommon
- CAN bus fault between the module and the ABS/stability controllerLess often
- Water intrusion or corrosion at the module, often mounted low in the cabin or consoleLess often
How to diagnose & fix
Work through it in order
- Scan for related chassis codes and check whether the module answers a scan tool.
- Confirm power and ground at the acceleration sensor module.
- Inspect the module's connector and wiring for damage, corrosion, or water.
- Check the CAN circuits between the module and the ABS/stability controller for opens or shorts.
- If power and wiring are good but the module stays silent, replace it, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with U0125?+
Can I just clear U0125?+
Related codes
Often seen with U0125
Read & clear U0125 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.