DTC C1231/31: Steering Angle Sensor Circuit Malfunction [08/2013 - ]: Description
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
The skid control ECU (brake booster with master cylinder assembly) receives steering angle sensor signals via the CAN communication system. When a malfunction occurs in the communication line with the steering angle sensor, DTC U0126/63 (Lost Communication with Steering Angle Sensor Module) is stored.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1231/31 | 701 | While steering angle sensor communication is enabled, a malfunction signal output is received during the sensor self-check (sensor malfunction). | Steering angle sensor internal malfunction |
| ↑ | 702 | While steering angle sensor communication is enabled, a malfunction signal output is received during the sensor self-check (internal malfunction). | ↑ |
| ↑ | 703 | While steering angle sensor communication is enabled, a malfunction signal output is received during the sensor self-check (+B malfunction). | ↑ |