Hey all, Just looking for some input on my CEL code, so here's the background on it:

PLEASE READ THE WHOLE THING BEFORE YOU COMMENT

I have a 96 B18B1 in my 92 Civic CX, After installing it, I had no CEL codes *Car ran great, and still does* Drove it 4-5 times, no CEL's, pulls strong, runs strong.

After we de-greased my engine bay, I noticed that after maybe 5 min of driving, the CEL came on, and I checked the code to find it was code 43. (took it out again later that evening, and again, after 5 min, CEL comes on)

We checked all the contacts after de-greasing it, and it all looks clean, nothings loose etc.

I suspect I just didn't tighten down the bolt on the fuel rail tight enough, so it has a small leak possibly causing lower pressure causing the CEL to come on *Maybe just from driving it the first 5 times it vibrated a little loose or something random like that, or the car is just finally learning everything, so it threw the CEL now, and the degrease may have nothing to do with it*, the fuel pump is good, relay is good, car starts/runs/drives perfect still. Anything else it could be or I should check on?

 

Bump, tightened up the bolts on the fuel rail, checked all vac lines, cleaned PCV valve, and now it only turns the CEL on sometimes.

Specifically, once the light comes on, the cars idle bounces slowly from 300-600RPM.

 

try swapping in another oxygen sensor and see it the CEL doesnt come back. the O2 sensor is related to the fuel system. also check to see it there isnt any water in your spark plug holes.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ejprimo &raquo;</TD></TR><TR><TD CLASS="quote">try swapping in another oxygen sensor and see it the CEL doesnt come back. the O2 sensor is related to the fuel system. also check to see it there isnt any water in your spark plug holes.</TD></TR></TABLE>

I don't believe its the O2, because it would throw a code for the O2.

On a side-note, are all pre-cat O2 sensors the same from 92-00 on Civics and integras? I have a 4 wire O2 off my old D-series header laying around still.

I will take a look if some water got under the plug wire boots, but I'm pretty doubtful of that one throwing a 'fuel system' code.

Anyone ever had this code on there car?

 

here are some recent topics that suggest code 43 is most likely associated to the oxygen sensor:

https://honda-tech.com/zerothread?id=2235641
https://honda-tech.com/zerothread?id=1944543
https://honda-tech.com/zerothread?id=1638226
https://honda-tech.com/zerothread?id=1680200
https://honda-tech.com/zerothread?id=1609876

 

hey i have that same problem on my b18b swaped eg hatch.. so if u find what ur problem is let me know...

 

Change your o2 sensor, I had the same problem. My car drove fine except I had poor gas milage and cel 43. Then I checked the o2 sensor the way it tells you to check it in the haynes manual. When I replaced it the car was back to normal.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmhatch1 &raquo;</TD></TR><TR><TD CLASS="quote">Change your o2 sensor, I had the same problem. My car drove fine except I had poor gas milage and cel 43. Then I checked the o2 sensor the way it tells you to check it in the haynes manual. When I replaced it the car was back to normal.</TD></TR></TABLE>

Ehh, it doesn't matter anymore sadly, Blew the Diff today, one week of abuse was too much I guess.

 

aight guys i think my problem has been solved,, i unpluged the o2 sensor and replaced it with a new one and its not trowing the code anymore and it seems like im gettin better gas milage...so defenitely the o2 sensor was trowing the 43 cel code.. thanx


Modified by EKway2low at 1:58 PM 4/18/2008

 

anyone know if the 4 wire O2 for a 92 SI is the same as a 96 LS?

 

I used my sohc z6 o2 on my gsr swap when I had a cel 43 and it turned off and never came back also got better gas miles.

 

was your GSR an OBD 2 motor?

I have a nearly new O2 for the Z6 sitting in a box that I wanna try out on this.

 

as long as it is a 4 wire i dont see why it shouldnt work..
if u have it there it doesnt hurt to try it out,, make sure u reset ur ecu when u do this..

 

yes its obd2 but that does not matter because the motor only know what you tell it what it is and all 4 wire o2 are the same as far as i know.

 

just plug it in and if u dont get a cel your good to go

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EKway2low &raquo;</TD></TR><TR><TD CLASS="quote">aight guys i think my problem has been solved,, i unpluged the o2 sensor and its not trowing the code anymore and it seems like im gettin better gas milage...so defenitely the o2 sensor was trowing the 43 cel code.. thanx</TD></TR></TABLE>

I wouldn't consider this as a "fixed" problem. The o2 sensor is there for a reason. It gives the ECU feedback on the current running condition of the engine. I highly doubt that unplugging your sensor not only fixed your problem, but is also giving you better gas milage

 

Most of the time both cel come on
1 and 43
change the 02 sensor

 

horray for this thread, my car just threw code 43 in my face.

 

Thread from the dead!

yes, it was the O2 sensor.

Yes, all 4-wire O2's from 92-00 are the same for nearly all makes of 4 cylinder honda/acuras.

 

so if my engine is obd1 and i changed it over to obd0, is this why i have the code 43 and cant pass smog?

 

So which o2 sensor is it, the one in the manifold or the one after the catalytic converter?

 

Im in same boat, the o2 was good, less it went bad during the swap guess its possible. getting decent gas but should get better, any suggestions besides new o2

 

would this cause the motor to bogg out also while driving?

 

would this problem also make ur engine bogg out while driving?

 

actually it does i just fixed my problem