DTC C1231: Steering Angle Sensor Circuit [02/2019 - 12/2021]: Description

The skid control ECU (brake booster with master cylinder assembly) receives steering sensor signals via CAN communication. When a malfunction occurs in the communication line with the steering sensor, DTC U0126 (Lost Communication with Steering Angle Sensor Module) is stored.

DTC No.	Detection Item	INF Code	DTC Detection Condition	Trouble Area	Note
C1231	Steering Angle Sensor Circuit	701 702 703	INF Code: 701 While steering sensor communication is enabled, a malfunction signal output is received during the sensor self-check (sensor malfunction). INF Code: 702 While steering sensor communication is enabled, a malfunction signal output is received during the sensor self-check (internal malfunction). INF Code: 703 While steering sensor communication is enabled, a malfunction signal output is received during the sensor self-check (+B malfunction).	Steering sensor internal malfunction	-