New aftermarket 02 sensor (eBay) measured 3 ohms between 3 & 4 and just
could not keep from throwing a CEL P0135. After chasing down all the wires,
which were found good, bought another at Pep Boys (Bosch) and all is good so
far.

"Woody" <TheDuck@pond.net> wrote in message
news:n6gYl.35090$ZP4.23762@nlpi067.nbdc.sbc.com...
> Pin 3 & 4 should be the heater circuit. If you did not replace it with an
> OEM sensor you may need to get one. Many posts with 3rd party O2 sensors
> not working on the Honda. Resistance should be 10-40 ohms. Should have
> battery voltage on pin 4. From there you need to test the wiring harness,
> procedure in the OEM service manual. An OBDII scanner can also be used to
> diagnose.
>
> "lobo" <el_lobo@nowhere.net> wrote in message
> news:C3uWl.31658$YU2.321@nlpi066.nbdc.sbc.com...
>> Can't seem to get rid of this code as it keeps reappearing and have
>> replaced the bank 1sensor . I have been trying to find what voltage
>> readings I should have on the vehicle side plug to the 4 wire bank 1
>> sensor as my manual does not seem to indicate that. I have 12 volts (key
>> on-not running) on one of the unplugged heater pins to body ground but
>> not on the other. I am thinking I should have 12 volts on both?
>>
>> Thanks in advance,
>> Ray
>>
>> 1999 Accord
>> F23A1
>>
>>