July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC U2101: Control Module Configuration Incompatible: Description

PSCM configuration compatibility is checked during initial PSCM power up (ignition ON) with the voltage supply to the PSCM between 10 and 17 volts and with no DTCs set in the PSCM.

DTC U2101:00 (Control Module Configuration Incompatible: No Sub Type Information) - This DTC will set if the vehicle information received from the PCM during power up does not match what is stored in the PSCM.