Diagnostic Aids (without HP5)

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

DTC C0176 54 does not indicate that a malfunction has occurred. Rather that the PSCM had to limit current to the power steering motor to avoid thermal damage to the Power Steering System components. Discuss with the customer about driving conditions when the steering assist was reduced.
Inspect the under dash area around the steering column assembly. Ensure that no other components have come in contact with the power steering motor and module assembly, such as under dash insulation, or other electrical components.
Ensure that no steering components down stream of the power steering column assembly, such as ball joints, tie rod ends, universal joints, or the steering gear assembly, are mechanically binding. Refer to Increase in Effort While Turning Steering Wheel .