Front o2 sensor pass side on exhaust pipe before collector
On a 2003 Ford Explorer , 4.0 liter SOHC , V6 engine : Bank 1 is the passenger side of the engine Sensor 1 would be close to the engine before the exhaust enters the catalytic converter
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On a 2004 Ford Freestar : 1-----2-----3 ( bank 1 ) 4-----5-----6 ( bank 2 ) front of vehicle > driver Bank 2 , sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter
Bank 1 is the passenger side of your V6 in a Ford Ranger Sensor 1 is somewhere close to the engine before the exhaust enters the catalytic converter
On a 2003 Ford Windstar : firewall 1----2----3 ( Bank 1 ) 4----5----6 ( Bank 2 ) front of vehicle > driver
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Bank 1 is the passenger side of a V6 engine in a Ford Ranger
On a 2000 Ford Ranger , 3.0 and 4.0 liter V6 engines : Bank 1 is the passenger side of the engine Sensor 1 is close to the engine before the exhaust enters the catalytic converter ( it might even be in the outlet of the exhaust manifold )
On a Ford F-150 ( V8 and V6 engines ) Bank 2 is the drivers side of the engine Sensor 1 is close to the engine before the exhaust enters the catalytic converter
The bank 1 oxygen sensor on a 2003 Ford Taurus is located on the motor. It is on the top, back part near the firewall.
On a 2003 Ford Windstar , 3.8 liter V6 engine : firewall 1-----2-----3 ( Bank 1 ) 4-----5-----6 ( Bank 2 ) front of vehicle > driver
On a Ford Expedition : Bank 1 is the passenger side of the engine ( 4.6 and 5.4 )