I have a 1998 Honda Civic LX. (Details Below) can someone help me figure out how to fix

Asked by Dec 22, 2014 at 07:26 PM about the 1998 Honda Civic LX

Question type: Maintenance & Repair

I have a 1998 Honda Civic LX. It has codes of PO 300, 301, 302, 303 and P 1339. I put a
new spark plug in cyl. 3 and canceled out the engine light.and the car ran okay for 6 days
than later it started running rough again and the same codes came up again on my
scanner. What could be wrong?

2 Answers

sensor relay could be out check it,

checjk o2 sensors and fuses..

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