check engine light on after tune

[ca655321]

Hello,

I have a 2014 Jeep 5.7 hemi, just loaded the diablosport tune and now my check engine light is on. I followed all of the tune steps and did not encounter any problems, is this the normal behavior after a tune?

thanks.

[garrett]

which code is the vehicle throwing?

[ca655321]

It says “1 active code U0402” then if you click on the code it says , unable to get data” I cleared the code and it didn’t come back yet. Can you let me know what that code means?

[garrett]

looks like a generic code for the TCM, let us know if it comes back on after clearing it.