HHR L4-2.4L (2010)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor Replacement - Sensor 2
Heated Oxygen Sensor Replacement - Sensor 2
Removal Procedure
Caution: The oxygen sensor uses a permanently attached pigtail and connector. Do not remove the pigtail from the oxygen sensor. Damage to or
removal of the pigtail connector could affect proper operation of the oxygen sensor.
Caution: The use of excessive force may damage the threads in the exhaust manifold/pipe.
Note: The in-line connector and louvered end must be kept clear of grease, dirt or other contaminants. Avoid using cleaning solvents of any type. DO
NOT drop or roughly handle the heated oxygen sensor (HO2S).
Note: The HO2S may be difficult to remove when the engine temperature is less than 48°C (120°F).
1. If equipped with a manual transaxle, remove the wheel drive shaft heat shield. Refer to Front Wheel Drive Shaft Joint Boot Shield Replacement (
See: Transmission and Drivetrain/Drive Axles, Bearings and Joints/Axle Shaft Assembly/Constant Velocity Joint Boot/Service and Repair/Front
Wheel Drive Shaft Joint Boot Shield Replacement).
2. If equipped with a automatic transaxle, perform the following steps, remove the connector position assurance (CPA) retainer (2).
3. Disconnect the engine harness electrical connector (3) from the HO2S.
