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Right Hand Side (passenger side)...
The Bank 2 Sensor 1 Air/Fuel Ratio Sensor is on the left side of the Left Hand Front Exhaust Pipe, just below where it connects to the engine. Can't miss, it stands out like a sore thumb.....
Bank 2 Sensor 2 is passanger side after cat.
Usually bank 2 sensor 1 & 2 are right after the converter in the exhaust pipe.
On a 2005 Nissan Maxima where is the Camshaft Position Sensor (Bank 1) located?
Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1)symptomsOther than the MIL light illuminating you may not notice any performance issues.causeA short in the O2 sensor heater circuit or the sensor itselfA faulty O2 sensor heaterWiring or connectors are broken or frayed to the sensor or relayBad PCM or ECMThe fixCorrect wiring short or loose connector found in inspection.and/orReplace the bank 1 sensor 2, O2 sensor
Bank # 1 is the passenger side of the engine Bank # 1 , SENSOR # 1 , is close to the engine in the exhaust Bank # 1 , SENSOR # 2 , is in the exhaust after the catalytic converter ( downstream )
That is passenger side after the catalyst.
Yes, the vehicle can be safely operatedHO2S (A/F) Sensor Heater Control Circuit Low (Bank 2 Sensor 1)symptomsOther than the MIL light illuminating you may not notice any performance issues.causeA short in the O2 sensor heater circuit or the sensor itselfA faulty O2 sensor heaterWiring or connectors are broken or frayed to the sensor or relayBad PCM or ECMThe fixCorrect wiring short or loose connector found in inspection.and/orReplace the bank 2 sensor 1, O2 sensorReplace PCM if circuit has failed and no wiring issues present, good O2 sensor
O2 Sensor malfunction, Bank 1, Sensor 1
Subarus number their cylinders differently, perhaps because they're first and foremost a Right Hand drive car in their native Japan. Bank #1 is the passenger side on an American Subaru, Bank #2 is driver side. So if you throw an ECM code of P0051 (Oxy sensor heater problem - Bank#2, Sensor #1) you probably have to replace the Oxygen sensor on the driver's side of the car. Sensor 1 is the sensor BEFORE the catalytic converter. You'll have to get under the car to replace it, but it typically only involves unscrewing the old sensor, replacing it with the new, then connecting the wire for the new sensor in the same place as the old connection.
Bank # 1 is the passenger side of the engine in a Ford Expedition Sensor # 1 would be before the catalytic converter ( upstream sensor ) Sensor # 2 would be after the catalytic converter ( downstream sensor )