Conditions for Setting the DTC

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Opens, short to ground, or voltage on Phase A and Phase B or the analog signal circuits.
The calculated steering angle from the steering angle sensor does not correlate with the steering angle calculated from the yaw rate.