DTC 1: Outer Right Sensor Not Functional: Elimination

Clear fault memory, disengage reverse gear and turn ignition OFF. Turn ignition ON. Engage reverse gear and read out fault memory. If fault appears again, check electrical plug on sensor for open circuit.

If no open circuit, check for continuity between sensor connector, between pin 1 and pin 4. Check continuity between sensor connector, pin 1 and pin 2 also. In both cases, no continuity should exist.

If no faulty wiring is found, replace sensor.