DTC U1255, Class 2 Initialization Error: Notes
NOTE:
To identify wire colors and components on Class 2 serial data line, see appropriate wiring diagram in DATA LINK CONNECTORS article in WIRING DIAGRAMS.
When vehicle is started, PZM requests information from other modules on Class 2 serial data line. DTC U1255 will set when PZM request information from a particular module, and that module is not "on-line". PZM will then use default values. DTC U1255 will clear when module providing the requested informations comes back "on-line".