Help with solving some code problems ,Have 3 codes 1. PO 489 egr control circuit A low 2. P 2141 egr throttle control circuit A low 3. P 2144 egr vent control circuit low.
Thanks for any help

You want to fill in your sig first with what engine, emissions you have on your truck and what year it is.

I 'am sorry, It is a 02 stock other than a 4" exhaust and a s&b cold air intake
Thanks