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oxygen sensors

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Symptoms of a Bad or Failing Oxygen Sensor
Common signs include the Check Engine Light coming on, bad gas mileage, and a rough idle.
How Long Does an Oxygen Sensor Last?
Today’s automotive exhaust systems are much more complex than they once were. They must be in order to comply with much stricter environmental controls and the requirement to create less pollution. Your...
How Are Sensors Used to Improve a Car’s Performance?
The feeling of driving down the interstate or a desolate country road with your foot on the pedal as you feel the smooth way your car handles is incomparable. There’s just nothing quite like...
How Your ECU Uses Sensor Data
When you get upset with your car and start to think it has a mind of its own, you’re not too far off from the truth. The engine control unit (ECU) is responsible for a...
How Long Have Cars Been Using Sensors?
A Check Oil light comes on and you know you need to add a quart. You back up and hear that familiar beeping noise letting you know you’re close to the car behind...
How to Buy a Good Quality Oxygen Sensor
Oxygen sensors help your vehicle control both the fuel and ignition systems, making it a critical component to ensure your car is running and starting smoothly. Boost your ride’s fuel performance and...
How Long Does a Catalytic Converter Last?
The catalytic converter converts pollutants in the exhaust system into less toxic pollutants by using a redox reduction method. The catalytic converter is located on the exhaust system of your vehicle, and...
How to Replace an Oxygen Sensor
Oxygen sensors are one of the most important components on a modern vehicle’s engine management system. They are responsible for monitoring the air fuel mixture of the engine, and their readings affect...
How Do Sensors Get Dirty or Damaged?
Sensors play an integral role in the performance of your car’s engine. When one sensor stops working, it can cause the entire system to malfunction. The diagnostic computer relies on the information provided...
P2197 OBD-II Trouble Code: O2 Sensor Signal Stuck Lean Bank 2 Sensor 1
P2197 code definition O2 Sensor Signal Stuck Lean Bank 2 Sensor 1 What the P2197 code means This code is usually an indicator of an O2 (oxygen) sensor problem, although...
P2274 OBD-II Trouble Code: O2 (Oxygen) Sensor Signal Stuck Lean Bank 1 Sensor 3
P2274 code definition O2 (Oxygen) Sensor Signal Stuck Lean Bank 1 Sensor 3 What the P2274 code means This code definition indicates that either the oxygen sensor has failed, there is...
How to Replace an Air Fuel Ratio Sensor
The air fuel ratio sensor fails within a vehicle if the check engine light comes on. Poor engine performance results from oxygen sensor failure.

Related questions

Question
P0054
Hi there: It's very difficult to tell you yes or no on whether it'll be OK to drive 1,300 miles with this particular OBD-II error code. In general, the P0054 code indicates a problem with the HO2 sensor. If you...
Question
My engine light is on and auto zone code says O2 sensor or catalytic converter.
If you have codes to the O2 sensors does not always mean you have bad catalytic converters. You describe different problems that can be the converters and even a transmission shift problems. I would recommend having a mechanic like one...
Question
Heater will not stay hot
Hello. You are likely facing multiple issues at once. The low coolant would absolutely cause the heater to function intermittently. If you are continuously losing coolant there is likely a leak on the system and it will need to be...
Question
Location of bank 2 sensor 2 f-150 ford pick-up oxygen sensor
The bank 2 sensor 2 is on your right when facing the truck from the front or drivers side. The sensor is in the exhaust after the catalyst. The bank 2 sensor 1 is just below the exhaust manifold before...
Question
Had a computer check done and the scanner said to replace the Oxygen sensor.
Hi there. The oxygen (O2) sensors have two functions, read the emissions and preheat the tip for measuring. Usually the tip will no longer preheat up causing the sensors to not register the emissions. Other times the O2 sensors tend...
Question
Slight smell of gas or oil and poorer mpg fuel efficiency
This may be a result of a faulty oxygen sensor. As you may know the oxygen sensors which are part of your emissions system read exhaust gases to determine whether or not the appropriate amount of oxygen is present in...
Question
Sensor oxygen light
You may not have an O2 sensor problem at all. I would need to know the codes and problems you are having to give a complete diagnosis. I would suspect you are getting codes like P0171 or P0174. These are...
Question
O2 sensor
The oxygen sensors are part of your emissions system and read exhaust gases to determine whether or not the appropriate amount of oxygen is present in the exhaust. Based upon this reading, this information is relayed to the car's ECU...
Question
Can I be able to clean oxygen sensor.and reuse it again with a good result
You should not try and clean an O2 sensor or it will damage it. If the sensor has carbon black on it and you fixed the engine for running too rich then try to put O2 sensor back in the...
Question
Would a failing oxygen sensor cause lack of power and shifting problems?
As you may know, the oxygen sensors, which are part of your emission's system, read exhaust gases to determine whether or not the appropriate amount of oxygen is present in the exhaust. Based upon this reading, this information is relayed...
Question
The Check Engine Light came on, I hooked it up to my scanner and got the code P0308
Hello. A cylinder misfire can be caused by many things. If you are not able to notice any issues with engine performance then the misfire is likely minor or intermittent. A few common causes for a misfire are a faulty...
Question
I have a 1986 Chrysler Laser turbo with 13700 miles that failed emissions. Do oxygen sensors go bad from sitting around too long?
Wow, I almost bought one of these new back in 1986. It is possible that due to age, any number of sensors can be bad, even without a Check Engine Light being set. The best way to determine that is...
Question
My gas mileage has dropped to 22 mpg, what could be the cause?
When a vehicle gets poor fuel economy, it's typically due to an electrical sensor that is faulty, such as the oxygen sensors, the air fuel ratio sensor, dirty fuel injectors, or the throttle body being dirty. Driving habits can also...
Question
I have 2008 toyota highlander with vsc/trac off check engine light. I took to the shop and get the diagnostic. They are saying it
Hello - the first task is to determine what problem codes are causing the Check Engine light to be on. The VSC/Traction Control messages would be related to a wheel speed sensor, ABS module or brake light issue - not...
Question
How would I know if it was my upper or lower oxygen sensor that has gone out?
Typically if an oxygen sensor is bad, the check engine light would come on and a fault code stored in the engine control unit. There are other ways a technician can verify if oxygen sensors are performing as they should....
Question
I change the radiator but i have fault in my car p2568 how can i fix it
Hello. The code you have received is telling you that the downstream oxygen sensor has detected a temperature that is out of range. When the PCM (aka the main computer) detects this error it will set the warning light. This...
Question
Trouble code P0607 Engine Control Module & P0138 Oxygen Sensor Circuit
Replacing an engine control module should never be a first step. There are a number of other problems that can give a PO607 trouble code. First the battery voltage should be checked, and if the engine is running, the charging...
Question
When I start my car on a cold morning I have to pump the accelerator to get it to start.
As a general rule, car engines do not like cold weather and do not do operate as well in cold weather. When you start your car in the morning and turn the key to on, the coolant temperature sensor immediately...
Question
Cherry red catalytic converter.
Hi there. Usually, oxygen sensors do not cause this problem, but if the oxygen sensor itself is causing the truck to run lean, then that could cause this issue. If the oxygen sensor is bad, the Check Engine light...
Question
Check Engine Light on, catalytic converter and O2 sensors need changing - $3000
Hi there: If you're Check Engine Light is coming on and somebody diagnosed this as a problem with your O2 sensors or the catalytic converter emissions system, it's highly possible that the trouble part are the front or back bank...

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