Facet Oxygen Sensor Sensor

Facet oxygen sensors (O2 sensors, also called lambda sensors) monitor the oxygen content in a vehicle's exhaust stream and send that data to the engine control unit. The ECU uses the signal to fine-tune the air-fuel mixture, which helps with fuel economy, emissions control, and engine performance.

Key Features:

• Measures exhaust oxygen levels so the engine management system can keep combustion efficient
• Helps catalytic converters work properly and keeps emissions within limits
• Built as a replacement part for worn or failed oxygen sensors
• Available in several configurations across the Facet range, including multi-wire designs
• Made by Facet, a long-established supplier of aftermarket automotive parts

A failing oxygen sensor can cause poor fuel economy, rough idle, and a check engine light. Replacing it helps restore proper engine management and emissions performance.