the one the AC drain leaks on to
Just reset your computer after replacing the O2 sensor.
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
Bank 1 oxygen sensor is the closest to the engine exhaust manifold. It is usually can seen and replaced if necessary with open hood.
Have you had your 4 oxygen sensors replaced? It turns out when they replaced my oxygen sensors, they were after market parts so the service engine light did not come and gave codes even though they were replaced.
Bank 2 is the drivers side of the engine Sensor 2 is in the exhaust after the catalytic converter ( downstream )
With out knowing what code is stored in the computer, that cannot be answered.
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 )
Oxygen sensors don't have fuses. They either work completely or they don't, and it'll set the check engine light. They can only be replaced.
To fix an engine light code of 133 on a 1996 Ford Bronco with a 351 engine, the oxygen sensors need to be replaced. There are two oxygen sensors on this vehicle. One is on the driver's side and the other is on the passenger side of the exhaust or catalytic converter.
On a Ford Expedition ( 4.6 and 5.4 ) Bank 1 is the passenger side of the engine Sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter Sensor 2 would be AFTER the exhaust has passed through the catalytic converter
it is located on the front of the engine behind the fan at the lower part of the engine i just had one replaced it is long and round with one wire on it you can miss it
In a Ford Expedition : 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 )