Unlocking the Secrets of Oxygen Sensor Bank 1 Diagnostic Excellence

That's a pretty common sign of either an exhaust leak or vac leak. Could also be a plug issue I'd pull all the plugs and check them out and see ... Usually O2 sensors are refered to as Bank 1 and Bank 2. Bank 1 would be the front sensor before the cat and Bank 2 would be the sensor after the cat. Oxygen Sensor. SHIPPING & PICKUP. Ship to Home. CATEGORY. Oxygen Sensor (4263). Oxygen Sensor Gasket (1). Air- Fuel Ratio Sensor (984). Sensor 1 on Corvettes is always the sensor that is closest to the exhaust port of the engine. Bank Two is post catalytic converter. Bank 1 ... PLEASE HELP.. My MPG has gone down to 13MPG, I get a 2002 code and a bad reading on Bank 1 sensor 3. I cleaned the EGR and the MAP ... you can use oem or aftermarket sensors. i would consider it an easy job, just rent a "Oxygen Sensor Socket" from autozone/oreilly/advance/etc to ... This code means the Heated Oxygen Sensor (HO2S) Resistance is out of range on engine bank 1 (side of engine with cylinder #1) and the sensor upstream or in ... It is a Downstream sensor that measures the efficiency of the catalyst, it is only there for the emission tests. Here you can find a picture of the location. Did you replace B1,S1 and B2,S1, if so that's both the Air/Fuel Ratio Sensors and not the actual O2 sensors? From the part number it looks like ... confirmed that the O2 sensor has a fault and said it is BANK 1. I asked which one that is and he didn't know. The TB has two O2 sensors, one ...