Chrysler 1996 town n country van lxi edition

Question edited for clarity.
Question moved to model category.

6 diagrams of all the parts

https://parts.thomascdj.com/v-2005-chrysler-town-and-country--base--3-3l-v6-gas/service-brakes--brake-lines-and-hoses

https://www.google.com/search?q=chrysler+town+and+country+brake+system+diagram

..

all v engines have 2 or 4
i can be different for calif. cars.. are yah?
1996 is USA (calif , federal versions)
1998 is canada
3.8L: V6
the version that has a crossover ,bank 1 to bank 2.
so shares a cat ,and has 1 sensors in front of cat on manifold
and 1 for the cat. rear.
the rear 02 is seen a wire to a grommet under drivers seat
to the cat rear. 02 sensor
the front sensor, is under wiper motor, the book says it must be removed, wiper motor. first


just for you, a photo of rear exh man.
marked up

o2 marked
Cr for cross over to front bank (a pipe)
T for tail , it goes to the CAT.





2 sensors here, !

if your asking where is sensor 1 bank 1 its in the exhaust pipe coming off the firewall side(rear) of the engine, sensor 1 bank 2 is in the exhaust pipe coming off the rad side(front) of the engine. they are the first sensor that you come to.

Pull the codes and see what they are!

upstream means above or before the catalytic converter, check this link for Chrysler and Dodge 3.8 locations, the have a diagram for you too look at http://autorepair.about.com/library/images/bl341lib.htm

you will need to start by checking fuse,then power to motor,then blower motor resistor

yes, as long as the O2 sensor screw tightly and the clip (plug in match) dont recomend any cutting or rigging the wire it self. all O2 sensors has built with the same concept.

p0420 code is catalytic convertor low efficiency.

check your fuel injector gaskets

Did you try inserting the key in the drivers side door and locking and unlocking it manually several times to reset the alarm system. This was the problem with my 1996 Chrysler Town & Country LXI