My SES light has been on since I bought the car last year and I finally got around to getting a reader to see what was causing the light. It showed 5 different codes:

P0172 - Bank 1 too rich
P0175 - Bank 2 too rich
P0403 - EGR Circuit malfuntion
P0441 - Evap emission control system incorrect purge flow
P0455 - Evap emission control system leak detected (gross leak)

I'm in the process of researching possible causes / solutions to these but any help is greatly appreciated!

 

2 door coupe 3.0 engine ?

 

Yes it's the 2dr 3.0 v6

 

humm u are gonna have some fun with that one this is all mitsubishi stuff

I can send u the pdf format of the flow charts on each code but as far as heling figure out whats wrong not much i can do for ya with out a drb right there looking at sensors and such.
Email me if u want the flow charts for each.

 

Check over on www.2gstratus.org for Stratus Coupe specific stuff. You might also want to check www.club3g.com Club3g is a Mits Eclipse forum, but the Dodge Stratus Coupe is based off the Mits Eclipse and Gallant. I am sure they can give you some help on how to fix your problems.

 

check for bad vac hoses. i just had to replace a bunch on my '02 se to get the light off. ended up having to drop the gas tank as the ones above it were also bad. it still ran fine, just wanted it fixed before going back down range. if you have airleaks it might be the reason it's running rich, might also give the evap code (mine was p0455 also). hope this helps.