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DTC Descriptors

WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
DTC C0450 01

Steering Assist Control Actuator Circuit Short to Battery

DTC C0450 02

Steering Assist Control Actuator Circuit Short to Ground

DTC C0450 04

Steering Assist Control Actuator Circuit Open