Diagnostic Aids

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

DTC C0476 does not indicate that a malfunction has occurred. Rather that the PSCM had to limit current to the EPS motor to avoid system thermal damage.
Inspect the under dash area around the EPS assembly. Ensure that no other components have come in contact with the EPS assembly such as under dash insulation or other electrical components.
Ensure that no steering components down stream of the EPS assembly, such as ball joints, tie rod ends, universal joints, or the steering rack and pinion are mechanically binding.