The check engine is on but my car is running fine. The car has no water or oil leak, and performs normal. I suspect it is emission related problem since it has 120k miles. I tried to located the connector on the passenger side as shown in the Haynes manual, but could not find that diag connector. Would someone here help me to locate it and tell me what it is look like.
Thanks all.

 

Under the passenger side there is 2 blue connectors a 3 wire plug and a 2 wire plug. It will be the 2 wire plug. Pull it out, get a paper clip and complete the circuit.

 

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Thank you all. I found the connector. It had code 1 and code 12. So I will chk and probably replace the oxy censor, since the car is at 120k miles. BTW, 95ACM, you have awesome picture.

 

The EGR code is probably the cause of the O2 sensor code. I'd say you should take care of the EGR problem first, then reset the ECU and try it again.

 

I will do that over the weekend. Btw, do you know the wiring color for the OEM honda oxy sensor, ie. gnd, heater, ecm ? This is just in case I need to buy the universal sensor to mate with the existing connector in the car.

Thank you.

 

what color are the wires?