2000 civic si

Hi,

I currently have spark and fuel pressure.

Compression is also good as well as timing.

Before the car died I had a trouble code for o2 sensor.

I do find that the cat will stay when the o2 sensor is unplugged.

I do have 5v at tps sensor.

Can a short in the o2 circuit cause no injector pulse?

I'm having a hard time finding the test procedure for this issue.

Thanks

 

So replace the O2 sensor.

 

Is it the secondary, or primary O2 sensor? Have you resistance tested the wires for the faulty O2 sensor? Have you tested your fuses?