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Advise: Hondahookup.com is by no means responsible for information that may be incorrect or inconsistent.  This information was put together by various members of the community.  We provided this information by reference only!

Honda B16A To determine if your ECU has an error code: 1. Locate the ECU under the carpet in the passenger foot well. 2. Find the red LED in the center of the ECU. 3. Turn the ignition to ON. The red LED should flash once when this happens to indicate that the ECU has power. 4. If there are no further flashes then there are no error codes. 5. If there are further flashes then there are one or more error codes. To get the number of the stored error code you need to count the number of long flashes and the number of short flashes. The long flashes will occur before the short ones. A long flash represents 10, and a short flash indicates 1. So if the flashes look like _ _ - - (where _ is a long flash and - is a short one) then the error code is 22. If there are multiple error codes, then there will be a noticeable pause before the next code starts. If for some reason you end up with an error code that is not on the list above, make sure you are not joining together flashes from two separate error codes. If you are sure about the error code and it is not above, then perhaps do a search for other Honda ECU error codes. The entire list is longer than above for engines other than first generation B16A engines.

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