No databus communication Cascadia 2016

Did you find out how it got fixed? My truck giving me same problem

 

What year is your truck?

 

Databus communication errors are typically not something the average person can properly troubleshoot.

Key off, you should see about 60 ohms between the high and low wires. Typically a range of 55 to 65 ohms is acceptable.

If its just one module (ECM) not communicating, chances are its in that particular leg of the datalink. Could be a broken datalink wire, no power to the module or a broken ground from the module. Could be the module itself failed but its unlikely an ECM has failed. They're pretty bulletproof for the most part.