B18B1 02 sensor location

[shekoski1213]

When i went to replace my o2 sensor, it had been previously cut. I have looked everywhere to try and find where the plug in is for it but know one has posted ijfo on it. It is the o2 sensor located at the cat instead of header because i have dc sport headers. Please help.

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[-PaulMc-]

There's a small hole right above where the catalytic converter is, did you search up in there? It's kind of hard to see unless you have plents of light or the car is on a lift..

[weavertime1]

Depending on what year integra you have it should either be in the rear part of the exhaust manifold (near where it connects to the cat) or OBD2 cars have a two O2 sensor setup with one being in the manifold and one in the cat. Good luck!

[shekoski1213]

thanks for the suggestions. again i am not looking for where the 02 sensor is but instead where it plugs in.

[weavertime1]

What year is your car? On OBD1 and OBD2 models the front O2 sensor plugs in near the oil filter. There is a tab that is attached to the intake manifold bracket that holds th plug in place usually. These cars are so messed with these days that you never know if things are in the right place or not. On OBD2 cars the second O2 sensor drop down out of the body of the car somewhere above the catalytic converter. OBD1 cars do not have the second O2 sensor. Good luck, and sorry for the misread question!

[shekoski1213]

bump...havent checked yet but more answers would help before i do so.

[weavertime1]

In your first post you say that your O2 wiring was peviously cut. In that case how are you expecting to find the plug? What year is your car, and what ecu are you running? I need some answers to give you a better idea of what's up.