Code U0125 on the 2021 Nissan Rogue indicates lost communication with the steering angle sensor. This sensor reports steering wheel position to multiple systems including stability control, lane keeping assist, and adaptive headlights.
Steering Angle Sensor Role
The steering angle sensor tells the vehicle's electronic systems where the driver intends to go. The stability control system compares this intended direction with actual vehicle behavior. Lane keeping assist and ProPILOT features use it to understand driver inputs. When communication is lost, these systems cannot function properly.
Multi-System Effects
With U0125 present, the VDC (Vehicle Dynamic Control) and SLIP lights illuminate. ProPILOT Assist features, if equipped, are disabled. Adaptive headlights won't turn with the steering. The electric power steering may default to a fixed assist level rather than speed-sensitive adjustment.
Diagnostic Path
The steering angle sensor is located in the steering column, often integrated with the clockspring assembly that also carries airbag and steering wheel control signals. Check the clockspring connector at the column. Verify power and ground to the sensor. Recent steering column or airbag work may have disturbed connections.
Repair Requirements
Many U0125 codes result from connector issues or clockspring problems. If the sensor itself has failed, replacement involves steering column work. After any steering angle sensor service, calibration is required using Nissan CONSULT to establish the center position reference.