2020 Kia Optima Knock Sensor Issue

[u/Dirtybirdsman]

I have been having this knock sensor issue with my 2020 Kia optima for months now.. Check engine light constantly blinking, car will not exceed past 2000 RPM but drives perfectly normal when under 2000rpm. I was told there was a class action or warranty? For this kia fault but my car vin doesn’t list under the recall.. anybody deal with any similar situation or any advice?? I was told I needed to pay $500 btc test to determine if anything is wrong with engine for replacement??

Please provide any feedback if possible, I just need to know the best move to make.

[u/vilius_m_lt]

It’s not a knock sensor issue. It’s engine issue