DTC U0126-00: Communication Error With Steering Angle Sensor (BCM): Outline

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0126:00 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Communication error with steering angle sensor
Detection condition	The body control module (BCM) cannot receive CAN signal from the steering angle sensor.
Fail-safe	Not applicable
Possible cause	Malfunction in CAN communication line between steering angle sensor and body control module (BCM)
System wiring diagram	Not applicable