Quote:
Originally Posted by ectech
IWhat's the best way to test the O2 sensor? Can I tell from the readings on my obd data?
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Quote:
Originally Posted by phattyduck
And OBD-II reader that does live data should be able to read the ECU's version of the O2 reading for the main and sub O2 sensors. That will be a start. You may still need to break out the multimeter to be 100% sure
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If the upstream sensor hasn’t been replaced in a long time, or if you don’t know the last time it was replaced, I would just put a new one in as part of preventative maintenance. Denso p/n 234-4162 (or 234-4161 if manual transmission, different length wiring harness on the sensor).
