I performed a Pre-Scan with my Verus Edge with 19.4 on a 2015 ford explorer. Pre-scan came back stating it analyzed 20 different systems, identified all 20 systems, and recorded any associated fault codes. Very comprehensive and giving me the impression all modules had been accessed. All was great until later I found out the air bag light was on and customer stated that it had illuminated off and on over the last few years. I attempted to communicate with the air bag module directly and found no communication as a result. Most likely internal air bag module fault. Why did the Pre-Scan report not indicate failed comm attempt with restraint module? The Pre-Scan report presented the list of systems that were successfully accessed as if it were the complete list of modules in the vehicle. I would like to see a flag raised during a code scan event if no communication was established with a specific module. I guess I don't read down through each list of pre-scanned systems making sure all modules are present and ask myself if I need to individually scan each one to ensure comms. Isn't the point of the code scan to consolidate all code retrieval attempts into one feature?