O2 sensor wiring
04-02-2009, 05:51 PM
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Staging Lane
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O2 sensor wiring i know that the rear sensors have the 4 wires two are for the heater and the other two are called the high and low signal i know the high is the actual reading, what is the PCM looking for out of the low output from the pcm. i believe the rear sensors have a isolated ground with this wire also.
