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U0402 help!

AlleyCat

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#1
So I am getting two codes. One if I do a burnout a little too long and a P something pops up. But the big one is the tcm code. It is shutting everything down to limp mode at about 125 mph. U0402. Diablo states it is probably a bad converter. But I had this code pop up a couple of years ago and it magically fixed it self. I just had a new transmission installed. So the dealer is going to take her back and run some diagnostics on the tcm. Does this have anything to do with the tune or is it a bad tcm/valve body or bad converter?
 


Tape

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#2
I would check for a
Faulty Transmission Control Module 1st or lose connection
 


Paladin06

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#3
Following
 


OP
AlleyCat

AlleyCat

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Thread Starter #4
Well if you go to you tube tv and do a search “Tucson Wednesday night drags” you will see me run 12 minutes into the video. I lifted the front wheels momentarily and backed off and got back on it again and then at 1100 feet it went into limp mode and finished at only 125 mph at 9.8. Normally I can go 144 at a da of 5000 feet. My friend and service advisor at Chrysler thinks it is the valve body. It goes in Tuesday. But I also noticed on the passenger rear I dug into the metal with the slick. That also could set it off due to different wheel speeds and the Ecu trying to protect the transmission and me. I took the sledge today and took care of that.
 


FFBOS

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#5
There is a harness that runs behind the liner in the rear on the passenger side. Was that hit?
 


OP
AlleyCat

AlleyCat

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Thread Starter #6
Ahhh. Thanks. I will check.
 




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