How does the oxygen sensor work on a Nissan Pathfinder?
How does the oxygen sensor work on a Nissan Pathfinder?
The oxygen sensor measures the amount of free oxygen in the exhaust system as an indicator of fuel mixture. The optimum fuel mixture is 14.5:1 for the best combustion and emission control. It creates a voltage in the millivolt range when it comes into contact with oxygen.
Where is the O2 sensor in the exhaust manifold?
Fig. 2: Location No. 1 — Typical O2 Sensor located in the exhaust manifold Fig. 4: Location No. 3 — Exhaust collector (where more than 1 pipe joins together)
Where is the oxygen sensor in the engine?
An Oxygen sensor that is between the catalytic converter and the engine is known as an “upstream” sensor. Oxygen sensors after the catalytic converter are “downstream sensors”. As a rule, the upstream sensor is more important for engine timing and air/fuel ratios.
Where is the oxygen sensor on an Audi A3?
For instance, an oxygen sensor at bank 1 – sensor 1 would be: Bank 1- Side of the engine with the first cylinder in the firing order. This means that you need to look up the firing order for your particular model year and engine.
Where are the oxygen sensors on a Nissan?
Your Nissan will have at least two oxygen sensors. One O2 sensor is upstream ( Bank 1- Sensor1 ) of the catalytic converter and can be accessed from the top of the engine. One or two sensors will be downstream, B1S2 and B2S2. The procedure is similar for the downstream O2 sensors (Bank 1 & 2, Sensor 2).
What happens when the oxygen sensor goes bad on a Nissan Pathfinder?
Oxygen sensors play a vital role in both engine management and emissions control. When an O2 (oxygen) sensor go bad, it’ll cause your Nissan Pathfinder ‘s engine to run less efficiently. Your Pathfinder can exhibit symptoms when the Oxygen sensor has gone bad.
Fig. 2: Location No. 1 — Typical O2 Sensor located in the exhaust manifold Fig. 4: Location No. 3 — Exhaust collector (where more than 1 pipe joins together)
For instance, an oxygen sensor at bank 1 – sensor 1 would be: Bank 1- Side of the engine with the first cylinder in the firing order. This means that you need to look up the firing order for your particular model year and engine.
