O2 sensor question
01-30-2016, 02:38 PM
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O2 sensor question
I've got a 2002 CRV and the shop I bring it to pulled the codes PO138 oxygen sensor circuit high voltage B1S2 and PO139 oxygen sensor circuit slow response B1S2. Do I have it right that the B1S2 O2 sensor is the second one and it's also called the down stream sensor?
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