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Scary sounding codes, PLEASE translate and advise!

7K views 9 replies 5 participants last post by  Kaliber35 
#1 ·
Check engine light came on. There are 3 codes that came up. Please translate and advise! Ive looked up the codes, but dont understand their meaning.

P0700
U0404
P0700 (pending)
 
#2 ·
Type, year and miles on the Jeep?

Code P0700 = Trans control malfunction.
Code Uo404 = Invalid data received from control module gear shift. This means Trans Control Sys malfunctioned. I have seen two solutions. Replace the shifter bezel in the jeep (makes the most sense - replace the computer) and replace a few filters in the tranny. I did find that both of these fixes are in TSB's (Technical service bulletin) 21-016-06a and 21-007-06. I would do both actions. I am not sure if either of these are covered by the original warranty 36K / 3 Year or the 7/ 70K drivetrain. 3/36 should cover it.
 
#3 ·
#5 ·
Not a WK guy but I imagine www.wkjeeps.com could help you out!

Or even lazier, call the dealership parts department and just tell 'em what you need. If the guys half competent he'll give you a number :)
 
#8 ·
Okay, I got in there and cleaned the connection. Im assuming this is where its plugged in. The connection looked spotless, but I cleaned it anyway. I guess Ill watch it and see if anything changes.

Observations thus far:
1) Check engine light went off
2) Trasmission not shifting when it should (randomly) between 2-3k rpm
3) Sluggish start from stop. Pressing accelerator doesnt yield expected acceleration.
4) Poor gas mileage

Does this all and the codes fit into it being the shifter bezel?
 
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