I have a 2003 with No OD and No ac. P0123 transmission code the apps Sensor reads ok as it should on in the engine side but has high voltage 4.8 on the transmission data. Looks to me that the only other signal coming off the Apps sensor is the idle switch that seems to work as it should. I am just wondering that because the Transmission and engine are all in one ecm that there is a internal fault in the ecm.Any thoughts?