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Jan 6, 2022 · A faulty O2 sensor can certainly cause shaking or vibrations in Subaru Impreza when driving. When the O2 sensor goes bad, it causes improper air-to-fuel mixture in the combustion chambers which can cause the engine to shake, these vibrations can be felt in the cabin of the vehicle when driving.
Jun 2, 2019 · Upstream O2 Sensor Failure. Your Subaru Impreza’s upstream O2 sensor(s), also known as the pre-catalytic converter sensor, measures the air-to-fuel ratio in your engine. This sensor helps your vehicle’s computer make adjustments to the fuel mixture for optimal performance. When the upstream O2 sensor fails, it can cause the following symptoms:
The code reader will not tell you if a sensor is bad or good, it will only tell you if the sensor is reading improperly. This can save you some time in identifying which oxygen sensor has failed. Note: Your Subaru can have between one and four oxygen sensors throughout the exhaust system. This number varies depending on the engine and vehicle ...
- Illuminated Check Engine light. Bad O2 sensors affect your engine and trigger the Check Engine light. When your O2 sensors start to go, they can’t measure the levels of oxygen in your exhaust accurately.
- Decreased fuel efficiency. Faulty O2 sensors can cause your engine to burn more fuel than needed. Have you been spending more on gas or making more frequent trips to fill up the tank than usual?
- Sulfuric or gasoline smells from the exhaust. Pungent, excess fuel can build up in the engine from bad O2 sensors. Notice if you smell sulfur, a rotten egg-like smell, or plain gasoline when you turn on your car or stand outside it while it’s idling.
- Black smoke from the exhaust. Black smoke comes from improper combustion from low oxygen levels. Oxygen is what your engine uses to burn fuel.
Sep 9, 2019 · O2 Sensors. Your Subaru Impreza’s O2 sensors monitor the exhaust to help the PCM determine the correct air/fuel mixture. O2 sensors may have the most demanding job of all the sensors in your vehicle. They deal with the hot exhaust that can cover them in deposits that can leave them ineffective. The exhaust heat can also bake the O2 sensor ...
Mar 21, 2024 · In many cases, there can be a trouble code related to the oxygen sensor, and you don’t notice any other bad o2 sensor symptoms at all. All of the trouble codes P0030, P0031, P0130, P0131, P0132, P0133 and P0134 have to do with the oxygen sensors.
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If you own a Subaru Impreza, running into problems with the oxygen (O2) sensor can ruin a day, though it is not a very common issue. Shop Towing Capacity Mpg Interior Weight 0-60 Hp Engines Dimensions Gas Tank Sizes Ground Clearance Problems
