FYI: if you are getting these codes, take it to your dealer and have them upgrade the ECU

Occurence: after long drives I'd get a cel, occasionally it would pop up on the navi, other times it would just be on the dash, code reads: P0171 or P0172... usually would come up when I used cruise control...

THIS IS NOT BECAUSE OF BAD GAS NOR RELATED TO CATS OR SENSORS

Religious 93 Octane (Shell V_Power User)

FIX: have an Acura or Honda dealer near you plug in the dianostics pc to your obd2 and flash ur rom and DONE

 

Mods you can add P0174, forgot to include that in the title