bank 1 o2 sensor which sensor is it - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 05-11-2011
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bank 1 o2 sensor which sensor is it

bank 1 o2 sensor code 172 appeared right after i replaced it i need to know which one it is so i can take it back to have it replaced, thanks
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Old 05-24-2011
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Bank 1 is always what ever side cylinder 1 is on. Sensor 1 is pre-cat and sensor 2 is post-cat.
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Old 05-26-2011
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thanks for the the reply, i checked the the harnesses and they were pluged in right to amuse myself i unpluged and plued them back in no code, i was like wtf and went on
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