Possible Causes

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

Possible Causes
(A108) FUSED B(+) CIRCUIT OPEN OR SHORTED
(Z907) GROUND CIRCUIT OPEN
(D55) AND (D54) CAN B BUS CIRCUITS OPEN
STEERING CONTROL MODULE