This is for TXGreaseMonkey.

How do you Access the engine codes to read out a code so that I can look up the code online. You see my honda has been doing almost the same as that other honda Dx and my mechanic does not have a OBD to diagnose a honda that old. Can you help please?

Pull back the passenger side carpet on the firewall at the top under the glovebox.. you will see a plastic access hole on a panel over the ECU... you look to see the sequence of flashes on the red led. As in how many long and how man short flashes.

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Originally Posted by smoothy

Pull back the passenger side carpet on the firewall at the top under the glovebox..you will see a plastic access hole on a panel over the ECU....you look to see the sequence of flashes on the red led. As in how many long and how man short flashes.

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What if that led light just flashes at a steady pace Smoohty?

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Originally Posted by Hondaman 117

what if that led light just flashes at a steady pace Smoohty?

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Pay close... really close attention to it... there should be some pattern to it... a momentary break at some point. Or you see a slight difference in the length of the flashes... its going to be obvious if you are looking for them.

Or is it like a flash... flash... flash... flash... flash... if that makes some sense. Watch it a couple minutes and pay notice if there is a pause in the flash routine.

Quote:

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Originally Posted by smoothy

Pay close...really close attention to it....there should be some pattern to it....a momentary break at some point. or you see a slight difference in the length of the flashes...its going to be obvious if you are looking for them.

Or is it like a flash...................flash..................fla sh...............flash................flash..... if that makes some sense. watch it a couple minutes and pay notice if there is a pause in the flash routine.

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it is very possible for the flashes to be a uniform length... this is how you get the codes from counting the flashes... they will cycle and may have multiple ones... ergo why to count through several cycles.

Here is a good explanation of the ODB0 codes... didn't see something here in the stickies right now.

http://crxcommunity.com/viewtopic.php?t=9903

This link should help for your 1990 Civic:

https://www.askmehelpdesk.com/cars-t...post-9924.html

I've Got a 1989 Civic Myself with a 1991 ODB0 engine in it... ( I know because I pulled it myself).

ODB1 should have started with the 1992 model year.