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Leo, Auto Service Technician
Category: Dodge
Satisfied Customers: 770
Experience:  2005 Dodge ASE master technician of the year
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Neutral..We recently replaced the trans & transfer case with used ones

Customer Question

Have trouble code P1899: Park/neutral switch stuck in park or in gear. What does this mean and what are the remedies? We recently replaced the trans & transfer case with used ones.
Submitted: 9 years ago.
Category: Dodge
Expert:  Leo replied 9 years ago.

Hi, and welcome to Just Answer!

The code indicates that the controller never sees the state of the park neutral switch change.

You didn't mention any trouble getting it started, so we can assume that it's stuck in the park / neutral position.

The most likely canidate is the park neutral switch. It's the 3 wire switch on the side of the transmission, just above the pan and to the rear of the shift lever.

It simply screws out, and the new one screws in.

To test the switch, the middle pin should be grounded in park or neutral, and open in any other position. (the two outer pins are for the backup lamps).

I hope this helps, any questions don't hesitate to reply back!



Customer: replied 9 years ago.
Reply to Leo's Post: I also have the Od off light on. Could this be caused by the same issue?
Expert:  Leo replied 9 years ago.


The service information doesn't mention anything about the OD off light coming on, but I suspect very strongly that it's because of the code your getting. The fact that the controller doesn't 'know' that the trans is in gear could have this effect.

(it actually knows your in gear because it sees the truck move, but the fact that the switch is in p/n confuses it.. and when it get's confused one of the first things to happen is OD gets disabled).


Leo and other Dodge Specialists are ready to help you
Customer: replied 9 years ago.
Reply to Leo's Post: Thanks a million. The mechanic we're using is a friend of my uncle and he wouldn't know a trouble code if it bit him in the ass!