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it refers to the location of the oxygen (o2) sensors relative to the engine. The upstream sensor is the one closest to the engine. The downstream sensor is furthest from the engine. Think of it as the way a stream of water, or in this case, a stream of exhaust flows.... From the engine To the tailpipe.
What else can I help you with?
Do you need upstream or downstream oxygen sensor?
Depends on what the problem is or what code was set.
What does code134 mean on Kia Sportage?
O2 circuit, bank 1 sensor 1, now in english you have an O2 sensor gone bad.You have 2 of them, an upstream and a downstream one. I would suspect the upstream one.
Where is the oxygen sensor located on Plymouths?
There is an upstream and downstream o2 sensor. The upstream is loctaed in the exhaust manifold before the catalytic converter. The downstream is located behind the catlytic converter.
99 cavalier o2 sensor?
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
Where is o2 sensor 1998 Sunfire?
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
Where is the o2 sensor on a 98 chev cavalier?
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
Where is the O2 sensor on a 1997 Pontiac Sunfire?
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
1998 Sunfire oxygen sensor?
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
Is the o2 sensor in 2002 dodge caravan upstream or downstream?
It has both an up and a down stream oxygen sensor.
What is upstream and downstream o2 sensors?
upstream 02 sensor located right above exhaust manifold gasket downstream located right in front of catallytic converter
O2 sensor location on 2005 mustang?
There are two upstream O2 sensors 4.0L V6 Upstream & Downstream Sensor Locations * Both upstream sensors are screwed into the exhaust pipe right below the exhaust manifold flanges * Both downstream sensors are located in the catalytic converters 4.6L V8 Upstream & Downstream Sensor Locations * The left upstream sensor is screwed into the exhaust manifold right above the manifold flange and the right upstream sensor is screwed into the exhaust pipe right below the exhaust manifold flange * Both downstream sensors are located in the catalytic converters
Is the O2 sensor for a 2000 Ford escort upstream or down stream?
both. upstream is under the hood, and the downstream is by the catalytic converter.
