P = Powertrain related followed by 4 digits.
need to know what a p 0800 code is also a p 0900 code for a 2003 darangoP0900 Clutch Actuator Circ/OpenP0800 Transfer Case Ctrl Sys (MIL Request)
cooling thermostat
Charging system , voltage too low
Trouble code P0840 means:Transmission fluid pressure sensor/switch "A" circuit
There is a long list of P codes. Better to ask for a P code. All P codes are used for multiple cars. I know for a fact that every Chrysler dodge jeep Plymouth use p0300 for multiple cylinder missfire.
Check the thermostut at first.  Your stut temp is too low. 
Trouble Code P1762 means:Governor pressure sensor offset voltage too low or high
Secondary Air Injection System Incorrect Flow Detected
Done means that the system is done flashing codes. If that Is all it flashed, there are no codes.
Song playing on 2012 Dodge Journey Commercial is Never Quit Loving You by Jill Barber.
no, there is no dipstick for the transmission on the 2009 Dodge Journey. You need to got it looked at by a service center.
Trouble code P1193 means:Inlet air temp sensor voltage high Try replacing the sensor to fix error