The P0606 deals with the internal microprocessor conditions within the engine control module (ECM). The code could set if there is a problem with the processor or if it isn't properly programed. As far as a separate ECM for the steering, no there isn't one. However, if your vehicle has speed sensitive steering, the ECM plays a role in its function. Since the rack is new, pressures may be off and causing the processor to randomly malfunction.
As far as the. C1414, this seems to be a common problem. It involves the electric steering servo motor. From the research I have done, it seems there is a recall and should be taken care of under warranty by the dealer. Keep in mind, the servo motor may be causing the problem with the ECM
Check out the diagram below
Tuesday, January 13th, 2015 AT 7:22 PM