Component Inspection (Heated Oxygen Sensor 2 Heater)
WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HEATED OXYGEN SENSOR 2 HEATER
- Turn ignition switch OFF.
- Disconnect heated oxygen sensor 2 harness connector.
- Check resistance between heated oxygen sensor 2 terminals as follows.
Heated oxygen sensor 2
Condition
Resistance
Terminal
1
2
Temperature
25 deg.C (77 deg.F)
3.4 - 4.4 Ohm
2
3
INF.Ohm
(Continuity should not exist)
4
3
4
Is the inspection result normal?
YES
INSPECTION END
NO
Replace malfunctioning heated oxygen sensor 2. Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST .