u/estevatoo

Hello! I have a 2014 Jeep Patriot 2.4L, out of nowhere my rpm’s started going crazy and I got the lightning bolt and traction control light on with the engine light flashing as well, the car was accelerating as it I was tapping on the gas, heard knocking from the engine and the smell coming out the muffler smell burnt, I got this code P2172, I replaced the throttle body not too long ago, replaced the spark plugs and coils and also replaced the map sensor before it happened, it was driving well for a while, what do you guys think it could be?