I have some codes already related to the evap control system and I'm living with them - but last time I checked I also found a P0171 "System too lean Bank 1." What I read was to check for vacuum leaks - and by god I found one - the clamp that holds the "big hose" onto the throttle body was loose - no idea how that happened. Also found one smaller vacuum line from the air box over to the engine that had a badly cracked end - replaced that and the code is gone.
