DTC Question

[bird03]

Does anyone have any idea why DTC U0401 would be consistently coming up when I check for codes? I have a 2013 5.0 w/ a KB 2.8lc using the kb tune that comes in with the kit.
Thanks

 

[5PointOHNO]

What's the reason code?

Isn't that something silly like "invalid data?"

 

[stkjock]

R u sure it's "U401"

That's not a currently used code it seems.

 

[bird03]

Yes, it's invalid data received from PCM. What would cause that and how would you go about fixing it?

 

[Grabber Blue 5.0]

Maybe contact KB regarding the tune?