[4th Gen : 01-07]: Code 139 Oxygen sensor

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Jan 13, 2014 | 08:44 PM

dakota5

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Code 139 Oxygen sensor

I have a 2002 with a 3.8 V6. I have a code 139 bank 1 sensor 2. Is this the downstream one, and where is it located? I trtied to search for it on the forum but it did not come up. Thanks for any help.....Doug

Jan 14, 2014 | 03:18 PM

Tizzy1

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yes, downsteam.

The downstream heated oxygen sensor threads into the outlet pipe at the rear of the catalytic convertor

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