DTC C1671-81: Signal LAT_ACCEL Or LONG_ACCEL Or YAW_RATE Or YL_PRES_STAT Not Valid: ETM
WARNING: This page is about a different car, the 2021 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
For wiring diagram information, refer to appropriate SYSTEM WIRING DIAGRAMS article.