Customer came in with a print out of a previous scan with many codes. Many related to communications of voltages in seemingly unrelated systems.

His 'actual'complaint was the remote locking didn't work after about a minute of switching off & interior lights were not working

I rescanned the vehicle & did a clear & rescan, most codes returned. It was also noted that while the scan was successful, the VCI switched off after the ignition was off for a minute or 2....BIG CLUE!