check engine light wil not reset.

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I recently put a d15b engine and transmission into my 93 honda civic cx? i think, with a p08 ecu. The engine runs fine but the check engine light will not go off, i tried getting and engine code by jumping the wires but it will not give me a code. I also don't know if vtec is engaging. THANK YOU, for any suggestions
Disconnect the battery for a few minutes and it should reset the ECU. If it comes back on, then something is tripping it. How are you looking for the codes? Paperclip?
yes, I am using a 2 inch wire to get the codes, but the light will not flash. It just comes on and stays on
if the light dont flash when you jump it. im thinking it may be a wiring problem because it should flash