U1206 - (J1850) INVALID OR MISSING DATA FOR PRIMARY ID
POST UPDATED IN June, 2023
U1206 - (J1850) INVALID OR MISSING DATA FOR PRIMARY ID
During normal vehicle operation, the control modules are attached to the Class 2 serial data circuit monitor for the respective transmissions maintained by these controllers. During this data transmission, some orders are traded between the modules as well as various operating information.
Individually, the modules receive a message used for a critical operating parameter, the module records the identification number of the module that transmitted the message for health status monitoring. A critical operating parameter is one that, when not reported, demands the module to use a default value for that parameter.
The U1206 OBDII fault code is set when a module does not associate an ID number with at least one critical parameter within 5 seconds of starting serial data transmission.
U1206 OBD2 diagnostic code is stored for one of the following reasons:
In order to troubleshoot the DTC U1206 OBDII code, consider the following: