RJ300

Having an issue with audio control LC2i. Have it wired to my factory system in a 2016 dodge charger. Powering a Fosgate prime 1200 1-D Worked great for about a year. Then my subwoofer stopped working, it’s a sundown SA-12. It moves but just barley. LC2i and amp power up but as music plays the amp LED flashes red, it’s stays blue but flashes red at the same time. I tested amp and sub on a friends vehicle everything works great. Any idea what could be going on with the LC2i let me know.