Pathfinder 2WD V6-3.5L (VQ35) (2003)
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Oxygen Sensor: Description and Operation
HO2S1 Heater
Description
The ECM performs ON/OFF control of the heated oxygen sensor 1 heaters corresponding to the engine speed and engine coolant temperature. The duty
percent varies with engine coolant temperature when engine is started.
HO2S2 HEATER
Description
The ECM performs ON/OFF control of the heated oxygen sensor 2 heaters corresponding to the engine speed, amount of intake air and engine coolant
temperature.
HO2S1
