[maxwedge]

Welcome to AF. Don't know how your tech determined the egr had failed, could be another issue such as blocked passages, or controls. Traction control could be another issue that rerquires ebcm capability to scan, it is also possible the etc is disabled if the pcm sees the misfire code, addt'l diagnosis is required here. Your tech really should be capable of dealing with these questions if you are contracting with him to do repairs, if replaces the egr and the problem comes back, make sure he understands you want some sort of assurance that is the problem with that code.