Code Definition

U0125 — Lost Communication With Multi-axis Acceleration Sensor Module A

System: Network Communication  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About U0125

U0125 is a generic (obd-ii standard) network communication diagnostic trouble code. It belongs to the U-prefix family of codes, which covers inter-module network communication (CAN, LIN, FlexRay, or similar) faults.

When U0125 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: Network (U) codes report communication faults between modules. When diagnosing U-codes, checking the vehicle's CAN bus integrity, supply/ground at each module, and reading all modules for related faults is usually the first step.

Because U0125 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

Modules on the high speed CAN bus rely on data from the multi axis acceleration sensor module, which reports yaw rate and lateral and longitudinal acceleration, to support electronic stability control and traction functions. DTC U0125 is set when a control module does not receive valid CAN messages from the multi axis acceleration sensor module within a calibrated time while overall network communication remains active. This indicates the sensor module is offline, unpowered, incorrectly grounded, or unable to communicate because of an open, short, or high resistance fault in its CAN connection...

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