Ascender 2WD V8-5.3L (2004)
Oxygen Sensor: Service and Repair
HO2S - Bank 1 Sensor 1
Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 1
Removal Procedure
1. Remove the catalytic converter.
2. Disconnect the connector position assurance (CPA) connector.
NOTE: Refer to Heated Oxygen and Oxygen Sensor Notice in Cautions and Notices.
See: Service Precautions/Heated Oxygen and Oxygen Sensor Notice
3. Disconnect the heated oxygen sensor (HO2S) electrical connector (3).
Installation Procedure
1. Connect the HO2S electrical connector (3).
2. Connect the CPA connector.
3. Install the catalytic converter.