DTC C1439: Steering Angle Sensor Initialization Incomplete; DTC C1445: Vehicle Driven with Steering Angle Sensor not Initialized [10/2018 - ]: Description
The skid control ECU (brake booster with master cylinder assembly) acquires the steering sensor zero point every time the power switch on (READY) and the vehicle is driven at 35 km/h (22 mph) or more for approximately 5 seconds. The skid control ECU (brake booster with master cylinder assembly) also stores the previous zero point.
If front wheel alignment or the steering wheel position is adjusted without disconnecting the cable from the negative (-) auxiliary battery terminal, or if the yaw rate and acceleration sensor zero point is not acquired after the adjustments have been completed, the skid control ECU (brake booster with master cylinder assembly) detects the difference between the previous zero point and newly acquired zero point and stores this DTC to indicate a poor adjustment.
Warning operation for the steering sensor zero point malfunction will be canceled by turning the power switch off.
| DTC No. | Detection Item | INF Code | DTC Detection Condition | Trouble Area | MIL | Note |
|---|---|---|---|---|---|---|
| C1439 | Steering Angle Sensor Initialization Incomplete | 752 | The steering sensor zero point is lost (due to instability of supplied power, etc.) and cannot be acquired by the skid control ECU (brake booster with master cylinder assembly). |
|
Does not come on | VSC DTC |
| C1445 | Vehicle Driven with Steering Angle Sensor not Initialized | 753 | Steering sensor zero point calibration cannot be obtained when the vehicle is driven without a record of steering sensor zero point calibration at a speed of 15 km/h (9 mph) or more for 60 seconds or more without the brake pedal being depressed. |
|
Does not come on | VSC DTC |