One on a four cylinder, two on a six cylinder.
They are screwed into the exhaust near the engine.
Oxygen sensors are screwed into the exhaust on both sides of the catalytic converter.
The oxygen sensors are screwed into the exhaust on the rear of the engine. The upstream is before the catalytic converter, the downstream is after.
Upstream oxygen sensors send a signal to the PCM which adjusts the fuel mixture ( air / fuel ratio )
upsteam sensor may be in the exhaust manifold,down stream is after the cat., in the exhaust pipe.
On a 2007 Chrysler Pacifica, the oxygen sensors are located in two primary areas: upstream (pre-catalytic converter) and downstream (post-catalytic converter). The upstream sensor is typically found near the exhaust manifold, while the downstream sensor is located further along the exhaust system, after the catalytic converter. Accessing these sensors may require lifting the vehicle for better visibility and reach.
On a 2004 Chrysler Pacifica, the oxygen sensors are located in two main areas: upstream (pre-catalytic converter) and downstream (post-catalytic converter). The upstream sensors are positioned on the exhaust manifold, while the downstream sensors are located in the exhaust pipe after the catalytic converter. You may need to lift the vehicle for better access, particularly for the downstream sensors. Always consult a repair manual for specific details and procedures.
It has four oxygen sensors.
There is a total of 4 oxygen sensors the 2 upstream sensors are located right below the exhaust manifold flanges and above the upstream catalytic converter.The 2 downstream sensors is located in the exhaust pipe,right behind the upstream catalyst,and ahead of the main catalyst.
Two, an upstream and a downstream oxygen sensor.
The oxygen sensors are screwed into the exhaust system behind the engine on a 2002 Chrysler Town and Country.
On a 2006 Chrysler Pacifica, the oxygen sensors are located in two main areas: upstream (pre-catalytic converter) and downstream (post-catalytic converter). The upstream sensor is typically found on the exhaust manifold or just before the catalytic converter, while the downstream sensor is located after the catalytic converter. There are usually two upstream and two downstream sensors, one for each bank of the engine. You may need to access the undercarriage or remove some components for easier access.