Search results

  1. J

    2002 Kia Sedona

    Recently I had my check engine light come on. The diagnostic code was "PO421 01/02." When I checked this sites tech codes, there was only PO420 and PO422. Does anyone know what this could mean or if the 420 code is the same? If not, can someone tell me what this code is and let me know what I...
  2. J

    2002 Kia Sedona

    I did a diagnostic check on my 2002 Kia Sedona and check the codes on the site. It said that my "Oxygen Sensor Circuit Malfunction" (PO136) and my "Oxygen Sensor Heater Malfunction" (PO141) - bopth bank 1, sensor 2 - where the reason for my check engine light remaining on. Does anybody know if...