Use an OBDII scan tool, if you don't own one go to just about any auto parts store and they'll scan it for free and tell you what the code means.
back aid not working
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 )
Speed sensor on a 2001 ford expedition
Bank 1 is the passenger side of the engine in your Ford Expedition Sensor 1 is in the exhaust system before the exhaust enters the catalytic converter ( upstream )
Lack of upstream heated oxygen sensor switch - sensor indicates rich - bank no. 2
On a 2000 Ford Expedition ( 4.6 and 5.4 ) Bank 2 is the drivers side of the engine Sensor 1 is close to the engine BEFORE the exhaust enters the catalytic converter
On a Ford Expedition , 5.4 and 4.6 Bank 2 is the drivers side of the engine Sensor 2 is in the exhaust AFTER the catalytic converter ( downstream sensor also called the catalyst monitor )
The 2004 Ford Expedition has a V8 engine.
how to change a thermostat on a 2004 ford expedition
The 2004 Ford Expedition has 16 valves.
The O2 sensor after the catalytic converter.
where is the speed sensor on my 2000 ford expedition v8 5.4 motor