Does a broken rear oxygen sensor have an impact on fuel consumption?

It will not have any impact on fuel consumption, but the front sensor is broken, which has an impact on fuel consumption, and the back sensor is mainly to detect the conversion efficiency of three-way catalysis, which cannot play a practical role, and the oxygen sensor on the surface is mainly used to monitor the air-fuel ratio.

Oxygen sensors in general.

The fault will generally turn on the light, the engine will shake, the exhaust has a sudden sound, there is a choking smell, fuel consumption will increase, you can use the fault diagnostic instrument to detect the voltage, generally between volts continue to change, the number of changes in 10 seconds more than 8 times, if the voltage changes between volts, it means that the mixture is too thin, if it changes between volts, it means that the mixture is too thick, if it does not move between volts, it means that the oxygen sensor is damaged.

Damage to the rear oxygen sensor will not affect fuel consumption The rear oxygen sensor is mainly to monitor the working condition of the TWC to control emissions, but the damage to the front oxygen sensor will affect fuel consumption Because the pulse width of the fuel injection mainly depends on the signal of the front oxygen!

Ensure the best air/fuel ratio to reduce fuel consumption.

In order to achieve the best catalytic rate of exhaust gas, an oxygen sensor must be installed in the engine exhaust pipe and closed-loop control must be realized, and the working principle of the oxygen sensor is to convert the measured oxygen concentration in the exhaust gas into an electrical signal and send it to the ECU, so that the air-fuel ratio of the engine can be controlled in a relatively ideal range. Therefore, in order to ensure the optimal air-fuel ratio, it is important to ensure that the oxygen sensor is working properly.

Therefore, the normal operation of the oxygen sensor has little impact on fuel consumption. If the oxygen sensor fails, resulting in the ECU not being able to obtain the oxygen concentration and inability to inject fuel according to the accurate oxygen concentration, then it will definitely consume fuel, and the degree of fuel consumption should be judged according to the actual situation.

Will the fuel consumption increase if the oxygen sensor is broken, the company will tell you for sure, it will be, and some cars will report fault codes.

You first disassemble the negative pole of the battery, then replug the plug of the front oxygen sensor, reinstall the negative pole of the battery, and observe whether the fault light is still on. If the oxygen sensor is really broken before it is lit, it is only necessary to replace it, and in addition: the oxygen sensor is broken, which will definitely increase fuel consumption.

Hello! Yes! The function of the oxygen sensor is to detect the concentration of the mixture of exhaust gas, if the oxygen sensor is broken, the concentration of the mixture cannot be detected, and the computer will let the fuel injector inject more fuel.

The function of the oxygen sensor is to detect the concentration of oxygen in the exhaust gas and send a feedback signal to the ECU, and then the ECU controls the increase or decrease of the fuel injection volume of the injector, so as to control the air-fuel ratio of the mixture near the theoretical value. Therefore, if there is a problem with the oxygen sensor, the mixture is easy to be too thick, which will cause fuel consumption to rise.

The oxygen sensor is used to control and detect the ratio of fuel to air, and the electronic injection system cannot control the fuel injection after damage, increasing fuel consumption. 8-100,000 km replacement.

Extended Information: Oxygen sensors are an essential component in engines that use three-way catalytic converters to reduce exhaust pollution. Because once the air-fuel ratio of the mixture deviates from the theoretical air-fuel ratio, the purification ability of the three-way catalyst for Co, HC and NOx will decrease sharply, so an oxygen sensor is installed in the exhaust pipe to detect the concentration of oxygen in the exhaust gas, and send a feedback signal to the ECU, and then the ECU controls the increase or decrease of the fuel injection volume of the injector, so as to control the air-fuel ratio of the mixture near the theoretical value.

In order to obtain a high exhaust purification rate and reduce the composition of (CO) carbon monoxide, (HC) hydrocarbons and (NOX) nitrogen oxides in the exhaust, the EFI truck must use a three-way catalytic converter. However, in order to use the three-way catalytic converter effectively, the air-fuel ratio must be precisely controlled so that it is always close to the theoretical air-fuel ratio. The catalytic converter is usually installed between the exhaust manifold and the muffler.

The oxygen sensor has the characteristic that the voltage it outputs abruptly around the theoretical air-fuel ratio (:1).

This characteristic is used to detect the concentration of oxygen in the exhaust gas and feedback to a computer to control the air/fuel ratio. When the actual air-fuel ratio becomes high, the concentration of oxygen in the exhaust gas increases, and the oxygen sensor notifies the ECU of the state of the dilute mixture (small electromotive force: O volts).

When the air-fuel ratio is lower than the theoretical air-fuel ratio, the concentration of oxygen in the exhaust gas decreases, and the status of the oxygen sensor (large EMF: 1 volt) notifies the (ECU) computer.

The ECU determines whether the air-fuel ratio is low or high based on the difference in electromotive force from the oxygen sensor and controls the duration of the injection accordingly. However, if the oxygen transmitter is faulty and the output electromotive force is abnormal, the (ECU) computer will not be able to accurately control the air/fuel ratio. Therefore, the oxygen sensor can also compensate for the error of the air-fuel ratio caused by the wear and tear of other parts of the EFI system.

It can be said that it is the only sensor in the EFI system that has "intelligence".

The function of the sensor is to determine whether there is excess oxygen in the exhaust gas after the engine combustion, that is, the oxygen content, and convert the oxygen content into a voltage signal and transmit it to the engine computer, so that the engine can realize the closed-loop control with the goal of excess air factor; Ensure that the three-way catalytic converter has the maximum conversion efficiency for the three pollutants in the exhaust gas, namely hydrocarbon (HC), carbon monoxide (CO) and nitrogen oxide (NOX), and maximize the conversion and purification of the emitted pollutants.

Oxygen sensor.

The main function of the rear oxygen sensor is to detect the oxygen content in the exhaust gas, which is used to correct the amount of fuel injection! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, the amount of fuel injected is regulated by the oxygen sensor. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello has no effect [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

In real life, when we drive a car, we suddenly find that the fuel consumption of our vehicle increases. So does this have anything to do with the oxygen sensor in our car? There must be a certain relationship, but there is no absolute relationship, that is to say, there is a possibility, but to find the specific cause, we naturally need to conduct further examinations, so that we can be clear.

After all, there are many factors that affect fuel consumption, and the oxygen sensor is just one of them, and there are many other things besides him. Fuel consumption is directly related to our own interests, so many people are very concerned, so what else will affect the fuel consumption of our vehicles in addition to the oxygen sensor? Let's take a brief look at it together.

The first is the issue of carbon deposits in our vehicles. Carbon deposits in cars are very common for us. Naturally, if they have a certain amount of carbon deposits, it will seriously affect the fuel consumption of our cars, which is a proven problem.

Therefore, in the process of daily car use, we must do a good job of regular cleaning of carbon deposits, so as to help us better maintain the condition of the car and better maintain our fuel consumption. <>

Secondly, there is the problem of spark plugs. In addition to the problem of carbon deposits, it may also be because of the failure of the spark plug, which is very common, because the spark plug is a normal ignition accessory, if he has a fault, then naturally there will be a great impact in the ignition process, so that it will affect his efficiency, thereby increasing our fuel consumption, so in the daily use of the car, we also need to pay attention to the normal situation of this accessory. <>

Of course, there are many other factors besides these. So we need to pay attention to it, after all, these things are closely related to our own interests, if it really has any impact, this result is not what we want, so in order to reduce this impact, we must pay serious attention to this matter, and treat this matter carefully.

It is related, it is related to the oil or the carbon deposition of the engine, and then it is also related to the basic operation of the usual.

It has a certain relationship, because the greater the power of the oxygen sensor, then the car will be very fuel-intensive in the process of driving.

Of course it is. If the oxygen sensor fails, it will be particularly oil-intensive, or if the degree of wear is more serious, it will also be particularly oil-efficient.

Generally, the oxygen sensor fault will generally turn on the light, the engine will shake, the exhaust has a sudden sound, there is a choking smell, fuel consumption will increase, you can use the fault diagnostic instrument to detect the voltage, generally between volts continue to change, the number of changes in 10 seconds more than 8 times, if the voltage changes between volts, it means that the mixture is too thin, if it changes between volts, it means that the mixture is too thick, if it does not move between the pulses, it means that the oxygen sensor is damaged. The damage of the rear oxygen sensor will not affect the fuel consumption The rear oxygen sensor is mainly to monitor the working condition of the TWC to control emissions, but the damage of the front oxygen sensor will affect the fuel consumption Because the pulse width of the fuel injection mainly depends on the signal of the front oxygen! Once the oxygen sensor fails, it will cause the computer of the electronic fuel injection system to not get the information of the oxygen concentration in the exhaust pipe, so it can not feedback and control the air-fuel ratio, which will increase the engine fuel consumption and exhaust pollution, and the engine will have unstable idling, lack of fire, surge and other fault phenomena.

Therefore, the oxygen sensor should be replaced or repaired as soon as possible after it is broken. The oxygen sensor is a standard configuration on the car, which is a measuring element that uses a ceramic sensitive element to measure the oxygen potential in the exhaust pipe of the car, calculates the corresponding oxygen concentration by the principle of chemical equilibrium, and monitors and controls the combustion air-fuel ratio to ensure product quality and exhaust emission standards. Oxygen sensor is widely used in all kinds of coal combustion, oil combustion, gas combustion and other furnace atmosphere control, it is the best combustion atmosphere measurement method at present, with simple structure, rapid response, easy maintenance, easy to use, accurate measurement and other advantages.

The use of this sensor for combustion atmosphere measurement and control can not only stabilize and improve product quality, but also shorten the production cycle and save energy. @2019

Summary. Hello, I am your exclusive technician, attentive, careful, dedicated to answering your car questions, for you to find the corresponding problem solutions and solutions! According to your rear oxygen sensor is broken has an impact on fuel consumption, there is an impact, if the rear oxygen sensor is damaged will cause high fuel consumption, if the rear oxygen sensor is damaged, it is recommended that you replace it in time, warm reminder that your car is maintained on time, change the oil every 5000 kilometers, usually refuel to a regular gas station, such as to Sinopec or PetroChina gas station refueling, so that the quality of oil is guaranteed, can reduce the engine carbon deposits, reduce engine wear and extend the service life of the engine, I hope my answer helps!

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Hello, I am your exclusive technician, attentive, careful, dedicated to answering your car questions, for you to find the corresponding problem solutions and solutions! According to your rear oxygen sensor is broken has an impact on fuel consumption, there is an impact, if the rear oxygen sensor is damaged will cause high fuel consumption, if the rear oxygen sensor is damaged, it is recommended to be good and replace it in time, warm reminder that your car is maintained on time, change the oil every 5000 kilometers, usually refuel to a regular gas station to refuel, such as to Sinopec or PetroChina gas station refueling so that the oil quality is guaranteed, but you can reduce the carbon deposition of the engine, Reduce engine wear and extend engine life, I hope my answer can help you in your history!

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