What Effect Do Fuel Additives and Injector Cleaners Have on Oxygen Sensors?

Oxygen sensors measure oxygen content in exhaust gases and help the engine control module maintain the correct air-fuel ratio. Some fuel additives containing metallic or contaminating compounds may leave deposits on oxygen sensors or other emissions components, potentially affecting performance. Fuel additives and injector cleaners that are labeled as "oxygen sensor safe" may be used in sensor equipped vehicles. Use of additives not labeled as "oxygen sensor safe" can damage your oxygen sensor.