After Engine Swap Downstream O2 Sensor Question

[06YarisRS]

Originally Posted by atomic_hoji

Any luck with it?

I'm in the same boat as above - swapped the stock Yaris one over without trouble. Sounds like maybe your sensor wires got mucked up or the sensor itself banged about a bit? Did you solder or repair any wires related to the O2 sensor?

-- Adam

Hey Adam. I haven't addressed it yet as I've been tied up with the A/C issues, which - at least for now - appear to have been resolved.

I think my new o2 sensor arrived to my US post box today, but I likely wont pick it up until after Christmas now. I'll be sure to let you know the outcome. The wires on mine were messed - twisted badly, so I'm guessing an intermittent wiring issue, maybe triggered when the exhaust shakes a certain way at startup. It's really random. I started and ran the car many times yesterday and today and no MIL, though I haven't scanned for pending codes. I can't say if there are any drivability issues as the car is back up in the air and hasn't been on the road. If after I replace the sensor the code reappears, I'll follow Tom's recommendations above. Are you getting the P0607?