The contact owns a 2019 Kia Optima. The contact stated while driving at undisclosed speeds, the check engine warning light was flashing, and the vehicle went into LIMP Mode. The vehicle was towed to the local dealer, where it was diagnosed and determined that an unknown sensor needed to be replaced. The vehicle was repaired, but the failure recurred. While driving 65 MPH, the driver came to a stop, and upon accelerating, the check engine warning light started flashing. The vehicle was consuming an excessive amount of engine oil. The contact used a code reader and determined the failure was with the knock sensor. The vehicle was taken back to the local dealer, who determined that the knock sensor needed to be replaced. The dealer informed the contact that there was no warranty coverage on the vehicle for the failure. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 92,000.

- Grand Haven, MI, USA