I just got a check engine light a few days ago. I checked the light and it blinked twice. Which means o2 sensor B might be bad. It hasn't come on again since the first time, but I figuired its time to replace it anyway. I want to replace both, but my parts store only had one in stock... So for now, I will replace sensor B. So which is sensor a and which is sensor b
Thanks.
Peaceout..
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