k, i know this is a "heated oxygen" sensor code. i did search too.
-i have 97 B20 in my 92 VX hatch. 92 teggy ecu. 4 wire o2 sensor that was running perfectly in the old civic engine. the sensor itself looks pretty new. maybe was replaced before i bought the car.
-problems are: searches for idle (checked all my vacuum lines), studders slightly at lower rpm. and...duh, CEL light is constantly on.
-do i have the incorrect ECU/o2 sensor combination?, or do you think the 02 sensor itself went bad??

thanks people,
bry

 

go plug your car to a scan tool.
best bet.

 

bump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RACEPAK &raquo;</TD></TR><TR><TD CLASS="quote">go plug your car to a scan tool.
best bet. </TD></TR></TABLE>

 

i'd just borrow somebody elses o2 sensor and see if that works... if so, get a new one.

also if you swapped a b20 into your 92 vx dont you have the 5-wire harness to 4-wire o2 sensor difference? idk for sure but i'd ./ on that one

 

check out the note for VX's on the bottom of the pic:

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RACEPAK &raquo;</TD></TR><TR><TD CLASS="quote">go plug your car to a scan tool.
best bet. </TD></TR></TABLE>

His car is OBD1; scan tools are not used on pre-OBD2. Unless he or someone he knows has an OBD1 Honda scanner; which I DOUBT.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by idriveacoupe. &raquo;</TD></TR><TR><TD CLASS="quote">

His car is OBD1; scan tools are not used on pre-OBD2. Unless he or someone he knows has an OBD1 Honda scanner; which I DOUBT.</TD></TR></TABLE>

Well, thats what i ment, i work at honda so every time i need to scan my car i plug it to the dealers scanner.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by x_blindsk8er_x &raquo;</TD></TR><TR><TD CLASS="quote">also if you swapped a b20 into your 92 vx dont you have the 5-wire harness to 4-wire o2 sensor difference? idk for sure but i'd ./ on that one</TD></TR></TABLE>

Like he said - you've got a Vx. Did you do the re-wire job for the 4-wire O2 sensor?

 

hmmm... this is a little confusing. unless someone screwed with my car before i bought it..( i assumed it was completely stock)...
----the model IS a VX. came with the d15 vtec engine in it. had a stock, 4 wire o2 sens. i used the d15 engine harness, stock d15 o2 sens, with a 92 integra ECU (non vtec, 5 spd).
---- all plugged right in. as of now, the car will run, stutters a little at lower rpm, but hauls *** above 4k.

 

I ASSumed 5th gen Vx's all used a 5-wire WBO2 sensor. Looking into the Helms ETM (92-95 Civic) shows two models of Vx's - 'California' & 'Except California'. The California model used the 4-wire O2...so that makes sense.

Grab a meter and measure the O2 heater resistance (between the two black wires and make sure to disconnect the O2 from the main engine harness when making htis measurement). It should measure between 15-40 ohms. If that checks out, make sure the heater control wire coming from the ECU (A6) has continuity to the actual O2 connector. If that checks out good, then...is A6 really the O2 heater contol for a 92 'teg ECU?

Here's the ETM page showing the differences between the two Vx's.

 

thnx dude. i'll try that when i get to the garage.

 

cali-VXs are the uncommon ones.

I'll bet you used the VX harness correct?
the P07 (VX ECU) uses 12V to control the heater... every other ECU honda makes uses ground to control it.
switch the other black wire (opposite A6 connection) from ground to 12V (yel/blk wires at driver's shock tower) and the CEL will be gone.

BTW: If you do not plan on using your ECU I'd be very interested in it... there are a few other diffferences inside that ECU that I've been itching to figure out.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Relic1 &raquo;</TD></TR><TR><TD CLASS="quote">I'll bet you used the VX harness correct?
the P07 (VX ECU) uses 12V to control the heater... every other ECU honda makes uses ground to control it.</TD></TR></TABLE>

Damn - spot on! I posted the schematic and totally glossed over that fact.

But uhh...anymore info on this:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Relic1 &raquo;</TD></TR><TR><TD CLASS="quote">BTW: If you do not plan on using your ECU I'd be very interested in it... there are a few other diffferences inside that ECU that I've been itching to figure out.</TD></TR></TABLE>

 

the way the O2 is used and the EGR setup is something I've been wanting to dig into for a long time. But I don't have a cali-spec P07 to play with.

Plus I'd love to pull the MCU code from it and play a little. There's a pull on PGMFI with the maps but I love to tinker with the VX and discover new things.
Plus I'm thinking that the cali spec ECU is close enough to the P28 in hardware design that much of the same code should be used, so pulling the code apart should be much easier than the 49-state spec P07.

 

Chris.... where do you find all these schematics?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RACEPAK &raquo;</TD></TR><TR><TD CLASS="quote">Chris.... where do you find all these schematics?</TD></TR></TABLE>

The link in my sig.

 

heeyy guys.... guess what? i'm a dumb-a$$!! it IS a 5 wire o2 sensor.(never saw the 5th wire hiding in there...damn wire loom). the car is what i think a canadian car. which all makes sense now.

by the way, i DO have the p07 civic ecu sittin around. or, do you think THAT ecu will run the b20 engine? i would assume not, due to the huge discrepency in engine size, fuel mapping ect.....

 

P07 behind a B20. please don't even try. It would be bad to say the least. The B20 would literally melt as soon as you take it on the highway.

convert to four wire and run a different ECU.

 

what ecu should i be running? (if i go to 4 wire) i have a 92 integra ecu in there now.. are 90-93 integras all 2 wire O2's?

 

the best idea would be to chip a P06 (or P28 if you plan on adding VTEC) and run it with that.
Which ECU are you calling a 92 teggy ECU? there are a few. That ECU may be chippable to run your engine correctly.

 

k, checked the label. the ecu is a "PR4" integra. i believe it came out of a 5 spd. it also has "A11" on it , and "ABJ" on the label. i'm pretty sure those do not have any significant meaning to them in reguards to compatibility issues. ideally, i am probably buying a hondata s300 sytem in the near future, as i am first going vtec head, then turbo this spring. that system would cure all my woes. that may have to wait a bit, as my 91 DA just got smaahed into, so now i have to buy another 2nd gen teg shell.

 

Here ya go

 

----k, so i will be grabbing a 4 wire O2 sensor tomorrow. what pins do these 4 wires corespond to on the (92 integra PR4) ECU? i have tried searching in here numerous times, and managed to confuse myself worse.
----i have sitting in the garage, a 92 integra engine side, and dash side wire harness. so, i have the 4 wire O2 sensor plug (engine harness side) sittin there, what wires do i wire it into the civic VX engine harness? (did i ask that clearly???) hope so.

thanks guys in advance.
bryan

 

bump for help, i have the 4 wire sensor ready to go