C0392 08

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The module does not receive a 5-volt reference of 4.8-5.2 volts.
The RPS low reference circuit has an open or high resistance causing a low voltage situation.