92-95 civic using p30 ecu


well i think i got some striaght directions, can any verify this as correct or if anyone has any different directions..

one black wire on o2 goes to a16 (orange/black)..... other black wire goes to yel/blk on injectors.....green goes to tps or air intake temp........ and white wire goes to c18 (but there is no c plug!!??)

 

Huh? Should be 2 wires to heat the o2 sensor, 1 wire is ground, and 1 wire is signal to ECU.

 

You'll have to have a service manual or a wiring diagram.

Sounds like you're doing a swap. Tell us which one and it would help.

 

seems like i fixed it for now, fingers crossed.

92 cx jdm b16
p30 ecu
4 wire o2
stock cx harness

A25 (yellow/black) black
A6 (orange/black) - black
D22 (green/white) - green
D14 (white/red) - white

 

leave the white and gray wires disconnected. they're for heating the sensor.

attach the green to the original plug, and ground out the black.

single wire O2 sensors are designed without a sensor heater, and are internally grounded, thus only reqiring the signal wire.

 

is that the same for the cx?

i got green for A26?

 

it's the same for all single wire O2 sensor applications

 

talkin to me?

 

hey did you had a cel before the o2 wireup?
did you had one after?

i did the same as you but i still get the code 41, let me know thanks.

 

hey did you had a cel before the o2 wireup?
did you had one after?

i did the same as you but i still get the code 41, let me know thanks.

 

me too i tried.. the same and still got the cel..

 

its called rywire.com and its the easiest plug and play in the world

 

i would like to know how wire in a 4 wire o2 also.

 

found this hope it helps

If you bought a CX or DX civic with a 1-wire o2 sensor, you're going to have to convert to a 4-wire to run a b-seires ecu, and most of the "top of the line" d-series ecu's like the p28.

First things first, you need to physically buy a 4-wire o2 sensor. you can't send a heater signal to a device which has no heater circuitry and expect it to work


Wires on 4 wire O2:

WHITE: Signal Wire
GREEN: Signal Ground
2 BLACK: Both black wires are the heater circuit wires.

Using a P28 ECU (and should work for most obd1 ecu's with 4-wire controls)

Run O2 Sensor signal (white) To D14
Run O2 Sensor signal Ground (green) to D22 (or any good Ground)
Run O2 Sensor Heater Circuit Control (black) to A6
Run the other black heater circuit power wire to (A25) or any good switched +12VDC source.

(you may mix up the black wires... if car dies after it is warm/10-30 seconds, that's the first thing to swap over and troubleshoot.. theres no way to tell one from the other by looking at them)