Wideband placement is important
 

You never place it on the side of the exhaust pipe - only between 10 and 2 o'clock. Why? Because when condensation forms on it...

Attachment 188513

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...you don't want the condensation dripping down inside the sensor. This sensor pictured here was brand new and damaged after idling for 20 minutes, then cooling down for another 10-15 minutes (the sensor was fitted by the exhaust shop and contrary to my specific instructions).

So do resist the temptation and place it properly.

Sorry to see that happened but thank you for the tip!

what postion was that fit in? mines closer to 2:30 and I've never had condensation form on mine. But yeah, never below 9 and 3.

Between 4 and 5, on the downpipe, stock 94 1.8.

The shop is buying you a new sensor, yes?

they better. It's obviously their fault

Yes, if they didn't follow your instructions and your sensor was ruined as a result, they should buy you a new one!

how was it reading in this condition?
mine has been mounted at around the 3:30 - 4 position (against my instruction!) but the readings seem fine and it's been in for a month or so... might pull it out and check this weekend