I was driving my 2014 Kia Ex and I heard a knocking noise, as I was driving my car stopped accelerating and went into limp mode. I took it to Kearny mesa kia and they told me it was the Knock sensor code P1326 I have looked and seen that there are plenty of recalls pertaining to this specific issue. Why are they telling me I have to pay for this when it is clearly something that is wrong with this on many vehicles across the board? I need my car fixed and back. Please help me.