To fix my issue and get my truck running back to normal, and no CEL...I pulled the fuses listed below, and put them back in and started the truck. CEL was still on but no LIMP mode, TCS, or wrench. I then went to diagnostic on Mini Maxx tuner and erased both engine/transmission codes. GOOD TO GO and no CEL/WARNINGS

Hope this helps

 

Ckt low codes are usually shorts, but it just depends on which side of the circuit the control is on.

I've seen this problem before. All three of these codes are related. The u code is going to be a communication code related to not seeing the correct feedback after a command. It sends a command to the actuator or solenoid, then expects to see it move. If it doesn't see it move, it sets a network code since the feedback is hooked directly into a can bus.

When you pulled the fuses, you erased the KAM, and the light didn't come back on, which means it's an intermittent problem. You'll likely be hearing from this gremlin again.

 

Thank you for the input Jamie. I was confused as to why I seen these codes in the first place. When I installed my straight 5" exhaust, I had to get the mini maxx in order to even start my truck after the delete. The instructions mentioned to unplug the wastegate solenoid connector and the EGR connector as to not do damage to the truck, this was over a year ago that I haven't seen issues. I did swoop out new batteries the night before the CEL came on.

 

The batteries could have done it. These newer modules are hyper sensitive to low voltage. When screwing in the batt post bolt, the clamp wiggles sometimes and the loss of connection can do strange things. However, the light should have come on immediately, like, the very first time it was started after the battery change. Also, check to make sure all the battery connections are tight. That's a big one, especially with dodges.

Speaking of strange battery problems. Just today in fact, I put a set of batts in an 06 duramax and as soon as I hooked up the last batt neg cable, the thing fired up on its own, and ran. They key was 20 ft away inside the office. Is that nuts or what? I've never seen anything like it, it was trippy.

 

Chuck. What fuses dis you pull? I cant seem to find out which ones your talking about. Thank you!

 

hey . This is probably late , but did you guys figure this out ?