3 Different Check Engine Light Codes - JeepForum.com

 
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post #1 of 6 Old 03-18-2011, 07:42 PM Thread Starter
Ibraha
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Join Date: Mar 2011
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3 Different Check Engine Light Codes

First post on the forums. Anyways, the check engine light came on today for my 2006 Jeep Grand Cherokee 3.7 V.6, so I went and had them checked out:

UC404
P0700
U0404

I found out that the P0700 one was "Transmission Control System Malfunction", but, I can't seem to find out what the other ones are. Any help would be greatly appreciated.

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post #2 of 6 Old 03-18-2011, 08:14 PM
Lt_JWS
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U0404- Implausable data recieved from ESM, and the P0700 could be from low transmission fluid, the NAG1 tranny wiring bulkhead connector gives trouble and leaks.... Do you have any leaks?

Cant find the "UC404"

2006 XK 4.7V8 | Quadra-Drive II | Daystar 2" Lift |K&N Filter | Port and Polished Throttle Body| Magnaflow# 12256 | IAT Mod | Leather, heated seats,Command View| Factory Tow hooks | Full factory skids | Rear D-Ring Shackle
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post #3 of 6 Old 03-18-2011, 11:47 PM Thread Starter
Ibraha
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Hmm, haven't checked for leaks yet, will get on that tomorrow. Im curious on what exactly Implausible data received from ESM means.
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post #4 of 6 Old 03-19-2011, 08:27 AM
robpp
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esm = shift module.

its the shifter. clean the contacts first; worth a try since the ESM = BIG BUCKS. v6 is 600 for the part.

search here for the process.

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post #5 of 6 Old 03-19-2011, 05:08 PM
drj33p
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The P0700 Tranny could be one of many things,i had that code on my last Grand and it went into limp mode and it ended up being low voltage on start up in the battery.

So maybe a dealer or someone needs to find the fault within that code.

2006 WH Grand Cherokee Limited CRD.
1996 TJ Wrangler Sport.
"It's a Jeep Thing"
Not as many people down here understand.
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post #6 of 6 Old 03-19-2011, 07:45 PM Thread Starter
Ibraha
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I think I'll try and clean the shifter contacts, I'll update soon to see if that helps, thanks guys!
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