Hopefully you get some feedback here.. There isn't a huge power aftermarket for the EcoDiesel... tuning is almost the limits most push. The twin turbo kits come out, but I've only seen one truck have them.
Welcome! Auto parts store will usually do this for free. I would go to Amazon and get a OBD 2 adapter so you can use a phone app, connect to the adapter, and clear the codes yourself on demand.
I took a quick look here in Rock Auto's parts catalog, but nothing stood out to me on their site for a replacement. Maybe I overlooked something:
https://www.rockauto.com/en/catalog/ram,2014,1500,3.0l+v6+diesel+turbocharged,3307186,body+&+lamp+assembly,parking+/+turn+signal+lamp+assembly,11719