Where EXACTLY is the O2 sensor located on my 1995 Volvo 960, do you have a diagram? Thank you!

Heated Oxygen Sensors (2) On front & rear of catalytic converter

DTC 113 Transmission control module (TCM) fault

pics.

I'm finding entirely different meanings to that code.

i was assuming the code was a separate issue. but maybe not?

Can the O2 sensors be repair or is replacement necessary?

No, you can't repair an O/2 sensor if that even turns out to be your problem.

I have an O2 sensor code, but was told the 960 has only one sensor. Many other cars have two sensors.

'95 was the last year you could only have one sensor. You could find up to 4 after that.

Your sensor is mounted in the front of the Catalytic Converter.

Let me remind you that just because you have a code associated with an 0/2 sensor doesn't mean the sensor is the cause. There is also a question if you even have a code associated with an 0/2 sensor.