Oxygen Sensor: Locations

Upstream Sensor:

Downstream Sensors:

The Heated Oxygen Sensors (HO2S) are situated upstream and downstream the catalysts in the exhaust system and are identified as follows:
- Bank 1 - Cylinders 1 to 3 - forward exhaust system
- Bank 2 - Cylinders 4 to 6 - rearward exhaust system
- Sensor 1 - Sensor upstream of the catalyst - close to the cylinder head
- Sensor 2 - Sensor downstream of the catalyst - away from the cylinder head

NOTE: HO2S sensors and harness connectors are not identified as to position, so when sensors, harness or exhaust are changed they must be labelled to enable correct reconnection and location. Failure to observe this precaution may require the use of a Jaguar Diagnostic equipment to re-program the ECM.