why does traction control light come on when abs warning light comes on on 2006 Dodge Grand Caravan

traction control off light is on so is abs light, why

Asked by for the 2006 Dodge Grand Caravan
have abs codes scanned and post so we can adv. there is an abs issue that sets traction light to come on
can t get abs codes,a friend took all four wheels off and tested each sensor,they were all clean and had current going to them, hey, my brother lives in orange!
you need codes to more info from module