2012 jeep liberty p0643 & P0653 ?

[Carltonbuscemi]

I have no power to start no starter working no fuel pump motor working nothing seemsto work. It seems like a computer is gone. I have the red electrical symbol on the dash. Any ideas?

 

[tommudd]

I assume you have fully checked your battery and the clamps ?
Or tried another battery
Was it doing anything weird before ?
0643 is a high circut sensor code which can cause a ECM to go bad , cheap and easy to replace
I've replaced some using www.carcomputerexchange.com for one, and another place cant remember name right now

 

[Carltonbuscemi]

Yes it is the computer. The battery is fine. I thought maybe the fuel pump. But the codes just dont seem to indicate that. I was trying to remove those harnesses to the computer to inspect the contacts and see if there is a hot spot. I cant seem to figure out how to remove them without breaking them. you know that is a big no no.

 

[Carltonbuscemi]

So I found this site for a ecm . It would seem the reviews were great from couple of guys.

2012 Jeep Liberty PCM | ECM | ECU | 3.7L | VIN Programmed & Updated

Engine Computer fitting all 2012 Jeep Liberty 3.7L models. Compatibility will vary for these units, please review the list below to ensure it will fit your vehicle.

www.fs1inc.com

 

[Carltonbuscemi]

Your site that you gave me only does up too 2009 liberty ecu. What a shame. I always like to use a site that someone has had good experience.

 

[tommudd]

Your site that you gave me only does up too 2009 liberty ecu. What a shame. I always like to use a site that someone has had good experience.

Call them , they do not always have everything listed