Oxygen Sensor: Service Precautions

If the oxygen sensor pigtail wiring, the connector, or the terminal are damaged, the entire oxygen sensor assembly must be replaced. DO NOT attempt to repair the wiring, the connector, or the terminals. The sensors must have a clean air reference in order to function properly. This clean air reference is obtained by way of the oxygen sensor wires. Attempting to repair the wires, the connectors, or the terminals can result in the obstruction of the air reference and degrade the oxygen sensor performance.