2007 Dodge 3500 1T Diesel, purchased from used dealer w/ 135K. Drove off lot Check engine came on. Took back supposed to have been o2 sensor, he took to dealer got back drove 1 day now billowing white/blue smoke. Through codes P141A and P0244A. 1st question can I drive until can get to dealer..second question, if went to dealer and was Fixed, why now codes and smoking?!

 

Tow it back and make them pay for the towing.. Did you get any kind of warranty or a buy back clause in the contract?