Theory Of Operation
WARNING: This page is about a different car, the 2010 Dodge Avenger and 2010 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
The Transmission Control Module (TCM) monitors the movement of all shift forks to confirm proper movement and location with the use of Hall Effect style position sensors. If the TCM detects improper operation this DTC will set.