n3v3tz

well i just got a 94 civic thursday n i asked the guy why the check engine light was on..he said he just had the O2 sensor replaced and they forgot to reset the computer...i know on my f150 i just disconnect the battery for a few min to reset the computer but the guy told me it was a lil different then that...i dont have a manual or nething so could u guys plz help me get this thing reset so i can lose the check engine lite? thanks
ps-i searched but it wasnt helpful..nless i didnt search rite or wahtever

b16ahybrid

first i would pull the code, then either disconnect the battery or pull the ecu and back-up fuse located in the engine compartment (passenger side) 15 amp and 7amp fuses

if a shop replaced the o2 sensor i can almost gurantee that they reset the ecu.

zensoku207

All you gotta do is pull the 80 amp fuse under the hood.

n3v3tz

how would i get the code pulled? sorry im just used to fords wherei can go to autozone n get them to check & give me the code for free...but they only do domestics

hasback*

foo just unplug the battery for about a minute or so. den plug it back in and your light should be gone. if it comes back on den something is wrong..i did this with a civic a couple of times when i had a cel code

kool168

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hasback_00 &raquo;</TD></TR><TR><TD CLASS="quote">foo just unplug the battery for about a minute or so. den plug it back in and your light should be gone. if it comes back on den something is wrong..i did this with a civic a couple of times when i had a cel code</TD></TR></TABLE>

rite
pull out the fues or disconnect battary will reset the ECU, if the CEL still there, there must be something wrong, and you will have to check the engine code

n3v3tz

thanks ill try it tomorrow after skool...if i have to get the code pulled im assuming id have to go to a honda dealer only huh? i know thats not a big deal but the nearest honda dealer to me is like 40-50 miles away..thanks again though

The Internet Tough Guy

ecu code info: https://honda-tech.com/zerothread?id=682412

to reset it this is what i do (not sure if it's necessary but several say it is). start car let idle for 5 minutes. turn car off. pull 7.5A backup fuse under hood. leave for 5 minutes. install fuse, start and let idle for 5 minutes. turn car off, start back up and drive away. apparently the ecu learns a/f maps and that's how you get rid of them... but don't quote me on that.

kool168

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by n3v3tz &raquo;</TD></TR><TR><TD CLASS="quote">thanks ill try it tomorrow after skool...if i have to get the code pulled im assuming id have to go to a honda dealer only huh? i know thats not a big deal but the nearest honda dealer to me is like 40-50 miles away..thanks again though</TD></TR></TABLE>

you don't have to go to honda dealer, it's too expensive to ask them to check...
go to any mechanic shop and they should have that little computer thing to check the codes

b16ahybrid

under the passenger side dash, there will be a little plug hanging there, take a paperclip and jump the plug (it's only2 wire)...then turn the ignition on (don't start the car) and count how many times the cel flashes (maint req light)....then look on here for a chart of codes viola now you know the problem....

MikeNice

If you want to reset the computer, disconnect the batttery for a few minutes or just unplug the ECU for a hot sec. and then put the plugs back in. If you want to get codes off your computer then you need to go to the ECU and you will find 2 plugs that are not plugged to any thing. Grab the smallest one that only has 2 holes and stick a paper clip or some speaker wire in it. Then turn the car to ACC, but do not start the car. Your check engine light should start flashing on your gauge cluster. One long blink means 10 and a fast one means 1. Count the blinks and when you get your number look in a Honda Haynes manual to find out what each code means.