o2 Sensor Malfunction......or is it?

[evolegacy]

CEL came up after doing the head gaskets and valve clearences, forgot the code but it was for the o2 Sensor, said "o2 Sensor Circuit malfunction (bank 1 number 1), just posting this topic to get some clerification but which sensor would that be, front or back? so far the CEL has just been a fluke since i wiped the code and it hasnt come back, im still getting the random bog downs while driving though so i know one of them are FUBAR'd, but for the life of me i cant find any intel on which o2 it is, front or back >.<

[Huffer]

Bank 1 sensor 1 = front O2.

[Grafton]

the back one wont effect your engine (mine's unhooked)

[Matty2Hotty]

the back one wont effect your engine (mine's unhooked)

:smt017 your joking right?

[Grafton]

nope, not kidding I haven't had a chance to extend the wires, the rear o2 sensor location on the OBX header is WAY back compared to the stock position

the front o2 will really mess with your engine (mpg/power/drivability/etc...) though

[Reason]

the back one wont effect your engine (mine's unhooked)

Strange when my rear o2 went bad I had shitty gas mileage and it was driving rough.

[evolegacy]

nope, not kidding I haven't had a chance to extend the wires, the rear o2 sensor location on the OBX header is WAY back compared to the stock position

the front o2 will really mess with your engine (mpg/power/drivability/etc...) though


ya i had that same problem think i extended the lines by 2 feet or so, but thanks for the quick responses i figured it was my front o2 I just wanted to get clarified on it. I jacked up the wires back when i had that A/F gauge and never changed them out, gonna go get a universal plug and just swap it in, the o2 is good its only a few years old if that.