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2005 Hyundai Elantra Question: Check engine light comes on

 

Question

lencar, 2.0L 4 Cylinder, Bronx, NY, November 28, 2012, 16:37
 Rookie

was told rear oxygen sensor needs to be replace but after driving for a while check engine light comes on again.

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  • Answer #1

    November 28, 2012, 20:07
     Master

    So did you have the O2 sensor replaced or just cleared the code?

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    lencar, November 29, 2012, 08:31
     Rookie

    Yes. Sensor was replaced.

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    ziptie12, November 29, 2012, 10:28
     Master

    And the returned code is the same as before O2 sensor replacement? What code (P----#) is present?

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    frankyankee, December 27, 2012, 16:53
     Rookie

    Replaced sensor with Hyundai part. Code cleared but occasionally code PO420 comes back.

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