'06 5.9 w/Truck Camper with P2122 Code and in limp mode

[GeneBellegarde]

My 1st post, also the reason I joined. I installed a TSBooster before I went on a 4000 mile trip throughout the Western US. It was terrific, fixed the sponge throttle and all.
About 1/2 way back, after I had taken it up to 90 mph on a clear stretch, then refueled; it started up with a check engine light and was in limp mode.
I uninstalled the TSBooster and then pulled the battery cable in an effort to dump the code. After 3 starts it ran OK but CE light on.
Got to Klamath Falls and bought a basic code reader P2122, P0237, P2121, and cleared them.

Some hundreds of miles south I again took her up to 90+ MPH, refueled, and got another CE. Not limp mode.
Cleared it, (3x) came right back and stayed on remainder of trip and to the present.
This tells me I need a new Throttle drive-by-wire module.
Is it possible the TSBooster damaged the throttle reostat or something else in the system?
Anything else I should check before ordering a gas pedal?

Thanks in advance for all your help.

 

[p-Bar]

Boy that's a weird one. I think a fluke that the box destroyed anything. Smart to disconnect and put back to stock. Call BD diesel they sell this maybe they can troubleshoot
1-800-887-5030

 

[Tuesdak]

Clean the contacts and inspect the connector you "messed with" for the install of the device. Sometimes a pin gets something on it, gets pushed loose, or breaks etc.

Load test the batteries separately. A bad battery is no end of ghost problems. I would also inspect the grounds.