Hi,
i don't know if that fits to KIA as well, but a lot of parts have to be recognized by the ECU, because they are connected via CAN-BUS. If your old "known" part gets broken, the ECU swappes into a failsafe mode, that allows you to reach the next KIA service with any part that fits. There, a new TPS is installed and the ECU is hooked up to a computer with KIA Software. This way the ECU learns to know this new TPS, and everything will work normal again.