Oxygen Sensor
I think that bank1 sensor1 stands for the upstream o2 sensor vs. the sensor2 which is the downstream o2 sensor. Both the 4 cyl. and 6 cyl. employ 2 o2 sensors.
If you get it wrong, changing both might be a good idea.
Removal & Installation
2.4L Engine
NOTE: These engines use 2 heated oxygen sensors.
Upstream HO2S1
To Remove:
NOTE: If the engine temperature is lower than 120 °F (48 °C), the HO2S1 sensor may be difficult to remove. Excessive force could possibly damage the threads in the exhaust manifold.
To Install:
Downstream HO2S2
To Remove:
NOTE: If the engine temperature is lower than 120 °F (48 °C), the HO2S 2 sensor may be difficult to remove. Excessive force could possibly damage the threads in the exhaust pipe.
To Install:
3.3L & 3.8L Engines
NOTE: These engines use 2 heated oxygen sensors.
Upstream HO2S1
To Remove:
NOTE: If the engine temperature is lower than 120 °F (48 °C), the HO2S1 sensor may be difficult to remove. Excessive force could possibly damage the threads in the exhaust manifold.
To Install:
Downstream HO2S2
To Remove:
NOTE: If the engine temperature is lower than 120 °F (48 °C), the HO2S 2 sensor may be difficult to remove. Excessive force could possibly damage the threads in the exhaust pipe.
To Install:
O2 sensor bank1 sensor 1 where is it located on - next.gifrel='nofollow' href="http://arrc.epnet.com/autoapp/DOD_CARAV_01-04_F2/DOD_CARAV_01-04_F_CH04_Throttle_Position.htm">
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