Sensor, Oxygen: Removal: Removal
WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
The engine is equipped with two heated oxygen sensors:
- The upstream oxygen sensor (1) is referred to as the 1/1 sensor.
- The downstream oxygen sensor (2) is referred to as the 1/2 sensor.
WARNING:
The exhaust pipes and catalytic converter become very hot during engine operation. Allow the engine to cool before removing the oxygen sensor.
- Disconnect and isolate the negative battery cable.
- Raise and support the vehicle. Refer to HOISTING
.CAUTION:
When disconnecting the oxygen sensor electrical connector, do not pull directly on the wire going into the sensor. The sensor wiring can be damaged resulting in sensor failure.
- Disconnect the heated oxygen sensor electrical connector.
- Remove the oxygen sensor.
- Clean the exhaust pipe threads using an appropriate tap.