skill178

sorry if i posted in the wrong place. my 91 si threw a check engine light today and the ecu blinked

1 blink
1 blink
4 blinks

andone tell me what it is? dont think its code 114 cause i cant find anything for it!

im not too familure with ecu codes and stuff, thanks!

crazyboy

either 24 or 14 and i dont see a code 24 for your ecu i could be wrong tho. code 14 is iacv

codybuRr

hey buddy check out this stuff here.
https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/%5Bfaq%5D-ecu-codes-trouble-shooting-468260/
https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/all-ecu-codes-you-will-ever-need-1710584/

that has a list of codes for our ECU's and should tell you how to diagnose it.

codybuRr

if its:
one long blink.
a pause
one long blink.
a pause
four short blinks.

you have a code 1 and code 14.

skill178

its (short-pause-short-pause-short short short short) =\

jlicrx

if you have PM6 ECU, you have a code 1 for O2 sensor and a code 4 for crank sensor (in the distributor) - PM6 ECUs do not have long and short blinks, only short

skill178

thanks, thats probably it. i have a sohc JDM ZC engine but ive read you can use the factory harness and ecu from the SI wich is what i have, si it should be PM6. is there a blink between each code or sometin?