Bank 1 is the passenger side of the engine in your Ford F-150 ( V6 and V8 ) Sensor 1 would be close to the engine before the exhaust enters the catalytic converter ( upstream sensor ) Sensor 2 would be after the exhaust leaves the catalytic converter ( downstream sensor )
Bank 2 is the drivers side of your V6 or V8 engine in a 1997 Ford F-150
Bank 2 is the drivers side of the engine Sensor 2 is after the catalytic converter ( downstream )
On a 2003 Ford F-150, the O2 sensor bank 1 sensor 2 is located on the exhaust system, downstream of the catalytic converter on the driver's side. This sensor monitors the oxygen levels in the exhaust gases after they have passed through the catalytic converter. To access it, you may need to raise the vehicle for better visibility and reach.
Bank 2 is the drivers side of the engine in your 2001 Ford F-150 Sensor 1 is in the exhaust before the catalytic converter ( upstream ) Sensor 2 is in the exhaust after the catalytic converter ( downstream )
Bank 2 is the drivers side of your 4.2 liter V6 in a 1998 Ford F-150 Sensor 1 is between the engine and the catalytic converter ( upstream )
On a Ford F-150 , bank 1 is the passenger side of the engine and sensor 2 is in the exhaust pipe after the catalytic converter ( downstream )
On a 1997 Ford E-150 : Bank 1 is the passenger side of the engine ( V6 and V8 ) Sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter
On your Ford F-150 , V8 : Bank 1 is the passenger side of the engine Sensor 1 would be close to the engine before the exhaust enters the catalytic converter ( upstream sensor )
Bank 2 is the driver side of the engine on your Ford and sensor 1 is close to the engine in the exhaust before the exhaust enters the catalytic converter ( upstream )
Bank 2 is the drivers side of the engine ( V6 and V8 ) in your Ford F-150 Sensor 1 is in the exhaust before the catalytic converter ( upstream ) Sensor 2 is in the exhaust after the catalytic converter ( downstream )
Bank 1 is the passenger side of the engine in your E-150 Sensor 1 is between the engine and the catalytic converter ( upstream sensor )