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Technical / How-To Articles • Re: Oxygen Sensor time

Looks like I need to replace mine.

CEL light on. OBDII scan returns:
P0151 (Heated oxygen sensor (HO2S) 1, bank 2 - low voltage)
and
P219B (Mixture control, bank 2 - value out of range)

Popped the hood and I can see the O2 sensor... but it does not look easy to get a wrench on it. Any tips? Easier from below?

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