DTC P0409 = EGR Flow Sensor A Circuit. Looks like you have a problem with the EGR system. It will have to be fixed before the code will go away.
The 2009 Dodge Challenger has 24 valves.
The 2009 Dodge Challenger has a V6 engine.
The 2009 Dodge Challenger has a 5-speed automatic.
The 2009 Dodge Challenger is a gas-powered vehicle.
The 2009 Dodge Challenger runs on regular unleaded.
The 2009 Dodge Challenger has a drag coefficient of .35 Cd.
The height of the 2009 Dodge Challenger is 4 ft. 9 in. (57 in.).
The 2009 Dodge Challenger is 16 ft. 5.7 in. (197.7 in.) long.
The 2009 Dodge Challenger's turning circle is 38.9 ft..
The 2009 Dodge Challenger has single overhead cam (SOHC).
The curb weight of the 2009 Dodge Challenger is 3819 lbs..
The 2009 Dodge Challenger has 32.6 in. of rear leg room.