How do I know if I need a catalytic convertor or a oxygen sensor on. my 2003 hyndia elentra? I called the dealership parts and they have only sold two.

Asked by Mar 22, 2015 at 12:15 PM about the 2003 Hyundai Elantra GLS

Question type: Maintenance & Repair

Engine check light is on. Just put in new plugs and wires.

1 Answer

238,045

Did you scan the car for the fault codes since the engine light is on? Post the 4 digit codes back here.

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