Pathfinder 2WD V6-4.0L (VQ40DE) (2009)
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Arrow Indicates Front
Heated Oxygen Sensor
CAUTION:
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Do not over tighten air fuel ratio sensor 1 and heated oxygen sensor 2. Doing so may cause damage to air fuel ratio sensor 1 and heated
oxygen sensor 2, resulting in the "MIL" coming on.
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Before installing a new air fuel ratio sensor 1 and heated oxygen sensor 2, clean exhaust system threads using oxygen sensor thread
cleaner and apply anti-seize lubricant.
