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Discussion Starter · #1 · (Edited)
Hi new to this forum but was told you rock via a fellow redditor.

I have a 2000 s40 and the check engine light came on (134,000 miles). I took it to autozone and got generic read code of p0133 which is o2 bank 1 sensor 1 (H02S11) and thermostat error p0128 (running to cold). I assume the thermostat is stuck open.

I know the location of the o2 sensor but not 100% which it is. I assume is the left most one?
Also after I replace thermostat do I need to do anything about air pockets? (was told I may) If so how would I do it.

Will this be the part I need for the o2 sensor?

Thank you in advance and I hope to post here a ton.
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