2, one before the catalytic converter and another after the catalytic converter.
The 4 cylinder models have two oxygen sensors, and the V6 models have four oxygen sensors.
There are several O2 sensors on that vehicle and they are all threaded into the exhaust system at various points.
You should repair it as soon as possible because it can cause the catalytic converter or oxygen sensors to go bad. Then you are spending money you could have saved.
A 2003 Chevrolet Impala typically has four oxygen sensors. There are two upstream (pre-catalytic converter) sensors and two downstream (post-catalytic converter) sensors. The upstream sensors monitor the air-fuel mixture, while the downstream sensors help check the efficiency of the catalytic converter.
The 2003 Chevrolet Astro Van is equipped with two oxygen sensors: one located before the catalytic converter (upstream) and another located after it (downstream). These sensors monitor the exhaust gases to help the engine control module optimize fuel efficiency and emissions. If you're troubleshooting issues, it's important to check both sensors, as they work together to ensure proper engine performance.
In The Seats.
The oxygen sensors are screwed into the exhaust pipe behind the engine.
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how many oxygen sensors does a 2003 kia sedona 3.5 have
It will depend on the engine size. All will have 1 before the catalytic converter and 1 after each one.
There are two oxygen sensors in a 2003 Sonoma V6 with a 4.3 liter. Prices for the sensors start at $69.95.
Before and after the catylitic converters.