Exhaust Leak

[zerosl]

I was able to cut away the bolts between the flanges, but will need a longer drill. I replaced the donut gasket and clamped it shut with a U bolt until I come back to it after purchasing the correct parts

Noise is gone, but now I have a P0031 fault code.

I wonder if I damaged the O2 sensor while messing around?

nightmare fuel

[06YarisRS]

Originally Posted by zerosl

I wonder if I damaged the O2 sensor while messing around?

Maybe the wiring which is not far from the flange. Could you have nicked a wire with your drill bit? The downstream sensor has 4 wires. Not sure about the upstream wideband sensor.

[Mike Dexter]

Originally Posted by zerosl

I was able to cut away the bolts between the flanges, but will need a longer drill. I replaced the donut gasket and clamped it shut with a U bolt until I come back to it after purchasing the correct parts

Same thing happened to me. I was able to helicoil it by using an adapter to hold the bit/tap/helicoil tool to a 12" extension bar.