Just did a check on the smarty and it says i have 3 DTC codes... P1693,
P0602 and a P1682. I had these the other day and cleared them, and there back. Trucks running great, no check engine light or anything, charging system is showing over 14 most of the time after heaters shut off?? any ideas?? thanks

Capn

 

0602 is the standard code created by any downloader.... basically, it's normal and nothing to worry about.

 

I know 1693 is a companion code and 1683 may be too. Nothing to worry about with the Smarty.

 

P1682 means you need to check your alternator. Charging system voltage to low.