Hyundai Genesis (DH): Engine Control System / Heated Oxygen Sensor (HO2S) Troubleshooting

Other information:

Hyundai Genesis (DH) 2013-2016 Service Manual: Rheostat Repair procedures

Inspection 1. Disconnect the negative (-) battery terminal. 2. Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel") 3. Remove the lower crash pad switch assembly (A) after disengaging the mounting clip. 4. Remove the rheostat switch connector (A).

Hyundai Genesis (DH) 2013-2016 Service Manual: Photo Sensor Repair procedures

Inspection 1. Turn the ignition switch ON. 2. Connect the GDS. 3. Emit intensive light toward the photo sensor using a lamp, and check the output voltage change. 4. The voltage will rise with higher intensive light and fall with lower intensive light.