DTC C1290: Steering Angle Sensor Zero Point Malfunction: Description

WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

The skid control ECU acquires steering angle sensor zero point every time the engine switch is turned on (IG) and the vehicle is driven at 35 km/h (22 mph) or more for approximately 5 seconds. The ECU also stores the previous zero point.

If front wheel alignment or the steering wheel position is adjusted without disconnecting the cable from the negative (-) 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 detects the difference between the previous zero point and newly acquired zero point and outputs this DTC to indicate a poor adjustment.

Warning operation for the steering angle sensor zero point malfunction will be cancelled by turning the engine switch off.

DTC Code	DTC Detection Condition	Trouble Area
C1290	The newly acquired steering angle sensor zero point vastly differs from the previous one.	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