DTC C1290/66: Steering Angle Sensor Zero Point 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) acquires the steering angle sensor zero point every time the power switch is turned 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 the front wheel alignment or the steering wheel position is adjusted without disconnecting the cable from the negative (-) auxiliary battery terminal, or if 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 angle sensor zero point malfunction will be canceled by turning the power switch off.

DTC No.	INF Code	DTC Detection Condition	Trouble Area
C1290/66	751	The steering angle sensor zero point is judged as an abnormal value.	Yaw rate and acceleration sensor zero point calibration incomplete Poor adjustment of the center position of the steering wheel Poor adjustment of front wheel alignment