Home >> Infiniti >> 2023 >> QX55 Essential >> Repair and Diagnosis (Single Page) >> Steering >> Steering Control Systems >> Steering Control System (Direct Adaptive Steering) (DTC/Circuit Diagnosis) (1 Of 2) >> DTC/Circuit Diagnosis >> DTC C13A9-00: Back Up Circuit >> EPS/DAST 3 >> DTC Description >> Possible Cause