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1. www.wheelsjoint.com › subaru-impreza-bad-o2-sensorSubaru Impreza bad O2 sensor symptoms, causes, and diagnosis

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   Jan 6, 2022 · Subaru Impreza – (tomas devera photo / Shutterstock) The most common signs of bad O2 sensor in Subaru Impreza are slow acceleration, loss of power, irregular idling, engine hesitation or jerking when accelerating, high fuel consumption, higher tailpipe emissions, foul odor from exhaust, check engine light illuminates, and sometimes stalling.

2. www.subarupartsplus.com › blog › oxygen-sensor-explainedWhat Is An Oxygen Sensor And Why Is It Important? | Subaru ...

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   The oxygen sensor (O2 sensor) is designed to detect the amount of oxygen in the exhaust system. It compares this to the amount of oxygen outside the vehicle. The data is then sent to the vehicle's engine control unit (ECU) which uses the data to modulate the air-fuel mixture. The ECU does not only use data from the O2 sensors to determine the ...

3. Videos

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     How To Replace Both O2 Sensors On A Subaru

     Feb 4, 2019

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     How to remove & install 2002-07 Subaru Impreza Wrx O2 Sensor (Three simple tips)

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     How to Replace Downstream O2 Sensor 2012-2016 Subaru Impreza

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4. www.ultimatesubaru.org › forum › topicO2 sensor brand - same as OEM? - Ultimate Subaru Message Board

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   Apr 3, 2011 · 15730 Oxygen Sensor - OE SmartLink - Universal Fit - Downstream Sensor 4 Wire; Heated; Check / Replace Interval: 100,000 Miles H4-2458cc 2.5L FI EngDesg EJ253 GAS. 15170 Oxygen Sensor - OE Type - Exact Fit - Downstream Sensor 4 Wire; Heated; Check / Replace Interval: 100,000 Miles H4-2458cc 2.5L FI EngDesg EJ253 GAS

5. forums.nasioc.com › forums › showthreadInfamous P0420; which o2 sensors to replace? (VIDEO added ...

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   Jul 15, 2011 · In addition to what cosmothecat said about the P0420 code in contradiction to the wrong explanation by "dcleal" it should be known that the rear O2 DOES have some effect on the fueling and therefor the performance of the vehicle in 2005 and newer Impreza's (probably most or all other 2005 and newer Subaru's, too)

6. www.subarupartsplus.com › blog › diagnose-failingHow To Tell If An Oxygen Sensor Is Failing | Subaru Parts Plus

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   Set your voltmeter to the millivolt DC setting. Connect your voltmeter to the oxygen sensor and read the voltage output. Oxygen sensors fluctuate from 100mV to around 900mV. Anything beyond this range is an indicator of a failed sensor. The sensor may also show a constant reading with no fluctuation, if this happens either the sensor has failed ...

7. www.subarupartsplus.com › oxygen-sensorsGenuine OEM Subaru Oxygen Sensors - Subaru Parts Plus

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   Our expert Subaru parts professionals can answer any questions you might have about the oxygen sensor or any other part of your vehicle whether that's the Standard or the GL. Call us today at 888-294-4979. Oxygen Sensor. Part Number: 22641AA03C. Subaru.

8. People also ask

   How does the Subaru Impreza O2 sensor work?

   • The O2 sensor in Subaru Impreza monitors the level of oxygen in the engine’s exhaust gases and reports the data to the control unit that continuously adjusts the air to fuel ratio in the engine to achieve maximum efficiency.

   Subaru Impreza bad O2 sensor symptoms, causes, and diagnosis

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   Can you drive a Subaru Impreza with a bad oxygen sensor?

   • Driving your Impreza with a bad oxygen sensor can damage the engine or the catalytic converter, so you must act urgently to avoid more expensive repairs. Subaru Impreza – (tomas devera photo / Shutterstock)

   Subaru Impreza bad O2 sensor symptoms, causes, and diagnosis

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   How many oxygen sensors does a Subaru have?

   • Note: Your Subaru can have between one and four oxygen sensors throughout the exhaust system. This number varies depending on the engine and vehicle. Refer to your Subaru service manual to find how many sensors your car has and where in the exhaust they are located.

   How To Tell If An Oxygen Sensor Is Failing | Subaru Parts Plus

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   Should I replace my Impreza O2 sensor?

   • According to EPA, replacing a bad oxygen sensor can improve fuel economy by as much as 40 percent. So if your Impreza develops a greater thirst for gas, you should definitely consider checking or replacing O2 sensor, especially if the vehicle has racked up more than 100,000 miles.

   Subaru Impreza bad O2 sensor symptoms, causes, and diagnosis

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   Can a bad O2 sensor cause a Subaru Impreza to shake?

   • 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.

   Subaru Impreza bad O2 sensor symptoms, causes, and diagnosis

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   How do I know if my Subaru has oxygen sensors?

   • Another way to diagnose your Subaru’s oxygen sensors is to check the voltage output at each individual sensor with a digital voltmeter. Checking these sensors is an easy process and should take between 10 and 30 minutes. Idle the engine or drive the car for around 20 minutes to get everything up to operating temperature.

   How To Tell If An Oxygen Sensor Is Failing | Subaru Parts Plus

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9. carclubsusa.com › subaru › imprezaSubaru Impreza Bad O2 Sensors: How to Diagnose & Fix

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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