my 2001 hyundai sonata check engine light is on
To find out why the CEL is lit you need an OBDII scan.Most, (not all) parts houses will do it no charge. You will get a code, starts with 'P' then four numbers Before you buy anything, write down the codes and bring them back here. Open a new question so we will see it and one of us will be happy to make suggestions on the fix
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