Note that a loss of serial data DTC does not normally represent a failure of the module that set it. The DTC is unique to the module which is not communicating, for example, when the body control module (BCM) SOH message disappears, several modules set DTC U1064. Other modules on the class 2 serial data line, which expect to receive that SOH message, detect its absence those modules in turn set an internal DTC associated with the loss of SOH of the non-communicating module. When a module stops communicating on the class 2 serial data line, for example if the module loses power or ground, the SOH message it normally sends on the data line every 2 seconds disappears. Each module communicating on the class 2 serial data line sends a state of health (SOH) message every 2 seconds to ensure that the module is operating properly. The bus is active at 7.0 volts nominal and inactive at ground potential. Class 2 serial data is transmitted on a single wire at an average of 10.4 Kbps. The data link connector (DLC) allows a scan tool to communicate with the class 2 serial data circuit. There is no way your going to fix this, i know professional automotive technicians that wouldn't be able to. Other modules need to see a state of health message from all the computers and if not the anti-theft system will not allow the vehicle to start. the radio is on that serial communication network. If all the computers (control modules ) can't communicate the vehicle will not start. Your best bet might be to have a qualified automotive repair shop check it.
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