Hyundai Forums banner

downstream

  1. Downstream O2 Sensor on 2011 Elantra GLS 4DR harness location?

    MD ( 2011-2016) Elantra sedan/coupe
    I was under the car couple of weeks ago and looking at the downstream O2. It looks like the harness might actually go into the interior of the cabin? is that true? How hard is to access the harness? is it under the passenger side seat?. I need to change out the downstream O2. Any diagram...
Top