A8L V8-4.2L (BFM) (2004)
Oxygen Sensor: Service and Repair
Oxygen Sensor After Catalytic Converter, Bank 2
Oxygen Sensor after Catalytic Converter, Bank 2
Removing
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Disconnect electrical connector - 3 - of oxygen sensor 2, bank 2.
2
4-pin connection for oxygen sensor 1 and heater, bank 1.
3
4-pin connection for oxygen sensor 2 and heater, bank 2.
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Open all cable ties on transmission for oxygen sensor 2 electrical wiring connection.
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Remove oxygen sensor - arrow - using tool from Ring Spanner 7 piece set (3337).
Installing
Installation of oxygen sensor is in reverse order of removal. Note the following.
‹› Wires of oxygen sensors must always be secured in the same position when installing so that contact with the exhaust pipe is avoided.