1998 maxima ecu pinout

[kfwsnb83]

I am having trouble with my o2 sensors. the code says both senors before the cat are bad. Both are new. I have tested the fuse and the o2 sensor connectors I have 12 volts to that point. My next step was to check the wire from the connectors to the ecu, but i have no pinout for the ecu.

[MaximA32]

I'd be willing to bet that your front tube assembly is the issue and not the O2 sensor wires.

[kfwsnb83]

Front tube? Are you talking about exhaust?

[MaximA32]

Yes. It's the part of the exhaust that goes between the front exhaust manifold and the catalytic converter. It should have 1 or 2 o2 sensor bungs in it.

[kfwsnb83]

I had the exhaust of a buick close once, but the thing ran bad. That car was not a computer controlled car. This car runs good. It does have other issues like the dash lights not working.

[MaximA32]

I've never seen any driveability issues due to the front tube. It just tosses codes like ****s toss the salad.

[kfwsnb83]

I will check that out. This thing was throwing codes for sure. Thanks for your input. Phil