[Max335d]

I just tuned my car and on the second start up after the tune it threw an engine light for the reductant tank heater control circuit. I filled up the tank and cleared the light and then flashed it back to stock to see if it had to do with the tune and it came back, not sure how to fix this. Haven’t seen it online. Is there a fuse maybe that could have blown while , and what would it be? How do I go about fixing this.