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look under the passenger side dashboard, under the glove compartment. you will see a green rubber or plastic thing. with 2 plugs in it. put a jumper between those 2 holes. then check the check engine light after you put your car in pre-start mode. it will start flashing and 1 long = 10 1 short= 1 long long short = 21 get it..... look on Google for keyword in google. READ Honda CIVIC ENGINE CODES.

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17y ago

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