You should take care when handling the HO2S and the O2S, keep the in-line electrical connector and the louvered end free of grease, dirt, or other contaminants, avoid using cleaning solvents of any type, then turn the ignition off, disconnect the heated
Oxygen Sensor (HO2S) electrical connector, remove the HO2S electrical connector from the wiring harness bracket, raise and support the vehicle and remove the HO2S from the catalytic converter.