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O2 sensor (found just in front of the cat) or Power steering pressure sensor fault if it's a typo and should be P0551.
Ignore P1684 as it just means sometime in the last 50 starts the battery was disconnected
According to my source, code 1899 is a problem with the governor pressure sensor. But 4 digit codes are model specific, so you may be right about the selector switch. If the switch tests out to be faulty, it would need to be replaced and the code erased.
Here is the description for the code. You need to check the sensor and the wiring back to the computer.
P0551 DODGE Description
Power steering pressure (PSP) sensor is installed to the power
steering high-pressure tube and detects a power steering load. This
sensor is a potentiometer which transforms the power steering load into
output voltage, and emits the voltage signal to the Powertrain Control
Module (PCM). The PCM
controls the electric throttle control actuator and adjusts the
throttle valve opening angle to increase the engine speed and adjusts
the idle speed for the increased load. Read more: http://engine-codes.com/p0551_dodge.html#ixzz21xtT1DTz
CODE P1684 - BATTERY HAS BEEN DISCONNECTED.LOOK FOR LOOSE BATTERY CONNECTIONS. ARE BATTERY ITSELF HAS CELL PLATES SHORT INSIDE OF IT. CODE PO171 - FUEL SYSTEM LEAN. CODE PO462 - FUEL LEVEL SENSOR NUMBER 1 LOW INPUT. ALL YOUR PROBLEMS HAS TO DO WITH CODE P1684. CHECK BATTERY HAVE IT LOAD TESTED AND CHECK BATTERY CABLES FOR TIGHTNESS.TO KEEP FROM LOCKING OUT RADIO TURN IT OFF FIRST BEFORE YOU DISCONNECT NEGATIVE BATTERY CABLE.
P0302 is miss fire #2 cyl like a bad plug,wire or coil P1684 will set if you have lost battery power or battery has been disconnected the miss fire is why the car is jerking
If your check engine light is coming on, then there should be a trouble code stored in your computer to tell you what area to look in for problem. Run into an autozone, or Pep Boys & get a free scan and see what they say comes up for codes & then if not obvious what the problem is, get back to us & we'll help you out.
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