P1496 P1496 OBD Code Definition: P1496 5 Volt Supply Output Too Low P1496 OBD Code Description: OBD Code P1496 5 Volt Supply Output Too Low OBD Code P1496 EGR Stepper Motor Malfunction – Circuit 1 (1.8L). OBD Code P1496 EGR Stepper Motor Malfunction – Circuit 1 (1.8L) OBD Code P1496 EGR Stepper Motor Malfunction – Circuit 1 (1.8L).