Re: 2003 Dodge Caravan P0456 Post by jeff compton » Sat Oct 01, 2011 6:50 pm there's already a huge thread on here about that code on caravans! you most likely have a cracked vaccum line under the hood near the purge solenoid or under the van near the cannister!
B1183 OBD Code Description: Note: The information on the B1183 error code is purely informative, if you need more useful information, please consult your technician. Car brand: : Ferrari, Maserati, BMW, Mobil, Alfa Romeo, Aston Martin, Audi, Bentley, Chevrolet, Citroen, Dodge, Fiat, Ford,...