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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
Transmission slipping even when I had the transmission replaced.
Hi there. If the transmission was slipping and you had the transmission replaced and the transmission is still slipping, then there could be an issue with the shifter cable or downshift cable. Check the cables and see if they are...
Question
Upstream O2 sensor for Outlander 2009.
Hi there. The oxygen sensor is positioned in the exhaust pipe and can detect rich and lean burned fuel mixtures. They produce a voltage that sends a reference signal to the computer as an on and off switch. Rich burned...
Question
Rough idle, possible misfire, bad oxygen sensor a possible cause
There are a number of things that can cause a misfire to be present, but a failing oxygen sensor is certainly one of them. As you know the oxygen sensor reads the exhaust gases and relays this information to the...
Question
What's the price for the replacement of two rear oxygen sensors for the A6 2.7?
Billing question sent to CS for the price to replace the two rear oxygen sensors on a Audi A6 Quattro Turbo V6-2.7L.
Question
o2 senors
Hello there, many faults will cause your 2003 Chevrolet Malibu to shut off. In some occasions an oxygen sensor fault will cause the engine to stall as the oxygen sensors are used to help determine air and fuel ratios. When...
Question
O2 sensor 2003 Chevrolet Malibu
Hi there - yes, it is possible that a malfunctioning or dead O2 sensor could cause stalling. It will, over time, clog your catalytic converter - an expensive repair - and spew increased toxic exhaust into the atmosphere. In most...
Question
p0141 error code
The heater in an oxygen sensor is used to get the oxygen sensor up to operating temperature quickly to allow the system to go into closed loop operation. The heater will only operate once per key operation, and only from...
Question
P0171 bank 1 upstream O2 sensor
Hello, thank you for writing in. The bank 1 upstream oxygen sensor is referring to the oxygen sensor that is before the catalytic converter. If looking at the exhaust system, it would be located on the main pipe between the...
Question
Why does my oxygen sensor heater stay in not ready mode on my 2002 Cadillac Escalade
Hello. If you have performed the necessary driver cycles and have not lost battery voltage or reset the computer at any time then you either have a problem with the heater circuit of the sensor or the computer is failing....
Question
Replaced the oyxgen sensor, now the car won't start
Hello, thank you for writing in. If you used a universal oxygen sensor, you will want to make sure that it was wired correctly. If any wires touched or shorted out in the process, you may have also blown a...
Question
im fuel injected. acts like no gas is coming through system. once i pump pedal it starts up alright
It's either a fuel or ignition issue, however you do have to check the air induction system, such as any idle air control valve, mass air flow sensor, and so forth. With regard to the fuel possibility, it's relevant that...
Question
Codes p0101, p0131, p0137, p0151 & p0327 I guess I'm asking would replacing the ECM solve the problem? 2002 Chevrolet Blazer
Hello - the codes you list (besides the P0101 for the MAF) reference problems with the oxygen sensors and a knock sensor (P0327) for your engine. These are normal higher mileage maintenance items, and do NOT require replacing the ECU....
Question
Oxygen sensor Bank 2 Sensor 2 for a 2008 ES350. How much to Repair and Replace?
Hi there. The Oxygen sensors are located on the exhaust system in front of the catalytic converter and behind the catalytic converter. You will need to have a Oxygen sensor socket to remove the sensors. The socket is a deep...
Question
Check engine light is on and obdII said O2 sensor. 2002 Chevy Silverado 1500
Hi there - some problem codes require a certain number of "drive cycles" before the ECU will turn off a Check Engine problem code, O2 sensors often being one of them. If your truck is running well, ignore the light...
Question
why does my car hesitate when I hit the gas and also it has been tested on a computer and all of the oxygen sensors drop to zero
Hello, thank you for writing in. When the oxygen sensors read low voltages, the computer thinks the engine is running lean (less fuel than normal) and will try to compensate for it. In doing this, the computer will send the...
Question
Were is the Oxygen sensor on a 2005 Cadillac SRX? I'm trying to fix it myself - 2005 Cadillac SRX
Hi, there are 4 oxygen sensors on this engine. For each cylinder bank, there is one O2 sensor just in front of the catalytic converter, and one O2 sensor just after the catalytic converter - at the front of the...
Question
engine light on
Hello...What to do depends on whether the person examining the car actually tested the oxygen sensor (O2 sensor) or not. That "part", the O2 sensor, has no doubt been mentioned to you because it appeared in a list of possible...
Question
How do I know which O2 sensor to change when it sets a code for o2 sensor? 2000 Jaguar S-type
Hi - the description for each Check Engine problem code contains the clues : for a given code - P1647 for example - the description is "Bank 2, Sensor 1". This means the first sensor in the exhaust system -...
Question
Do you provide parts when repairing like o2,sensors
Yes, of course, any needed, or desired, repair parts can be made part of any repair order so that you do not have to go through the time and trouble of researching and procuring repair parts. I see you are...
Question
2000 NIssan Frontier SE v6 3.3
Hello, thank you for writing in. The bank 2 sensors are going to be on the left side of the vehicle (the driver's side). Sensor 1 is going to be upstream from the catalytic converter. Depending on your engine code,...

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