How to check the response of an oxygen sensor?
How to check the response of an oxygen sensor? Test the Oxygen Sensor Response to a Rich Fuel Condition Disconnect the plastic duct from the air cleaner assembly on your vehicle. Block the duct opening leading to the engine with a clean rag. This will reduce the amount of air going into the engine. Check the sensor’s signal voltmeter reading. How to find bank I and bank II of an oxygen sensor? To locate Bank I and Bank II, consult your vehicle service manual, if necessary. Then, if the sensor you're testing has more than one wire (heated sensor), locate...