I have a p0132 cel b1s1 high voltage i have checked the o2 sensor and its fine.

the results of the o2 sensor from the engine wiring harness is as follows
4 wires= black/yellow when car is in on position 12 volts wire is good
black/green wire constant ground is good has 12 volts
black/white wire ground wire when car is in on position failed.. should have 12volts also (i think)?
white wire is good.
Now can any1 help me find a diagram from the ecu to the black/white wire i seem not to find it online. trying to see the wire color from the ecu.

my car is an automatic d16y7 with a p2e ecu..thanks

 

I have the electrical manual and will try to remember to respond to your request if no one has by tomorrow this time. what color are the wires on the actual O2 sensor that you have?

 

This is from a 96 Helms electrical manual


Oxygen sensors

 

 

note page numbers and sensor ground pin 11 is for both O2 sensors

 

Thanks for the info..some1 just gave me a 96-2000 civic repair manual off the hondacivic.com forums. I followed the repair for the p0132 code.
according to the repair manual i have a bad o2 sensor but i just bought it. it is a denso from advance auto parts.
Is this car picky on it's sensors some1 is telling me to get one from the dealership I called around and they want like 400 plus dollars.

 

- Yellow/Black goes to the junction connector under the intake manifold, which gets its power from the under dash fusebox via the left shock tower connector. It should have 12V.
- Black/white goes to the ecu, unbroken. This is your O2 sensor heater control. It is grounded by the ecu to turn on the O2 heater.

Neither of these are your issue.

- White wire is your O2 sensor signal wire. It runs unbroken to the ecu.
- Green wire is your sensor ground, it merges with the other sensor grounds (except for the MAP sensor ground) at the brown junction connector in the cabin near the ecu.

This last guy is likely your bogey. Inspect the terminals at both ends (ecu junction connector (not likely), and sensor) and see if they are loose. Sometimes you can tweak them a little tighter so they make better contact with the pins.


The sensing side of a heated oxygen sensor generates its own voltage in operation (the black/yellow 12V source wire is only for the heater circuit) so you can think of it as you would a battery.

In general, high voltage on a simple circuit means you have a lack of ground. Low voltage means you have a short to ground or a weak source.

 

Thanks for the help I think I found the problem the white O2 sensor signal wire female connector was broken so i just jump the wire from the engine side to the o2 sensor side..so far so good scan tool is reading it right. the PO132 code hasn't showed up yet.