× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: It's going to get REAL for some!
Posted to Emissions Forum on 7/19/2021

Jamey,

It is my understanding that the Calibration Verification Numbers (CVN) is essentially a Checksum that verifies if the program has been changed. [...] [[...]]

Changing a word in a million lines of code will result in a different Checksum/CVN being ge... Login to read more.