What s wrong with the unreasonable heating resistance of Wuling Hongguang s upstream oxygen sensor?

What is the situation when the heating resistance of the oxygen sensor is unreasonable.

The oxygen sensor needs to work at a certain temperature, so there is a heating rod inside the sensor to ensure its operating temperature. The heating rod needs to be powered, so the oxygen sensor has electrodes in the plug that power the heating rod. Because the oxygen sensor is not an iron bump after all, there is a possibility of damage, so there are diagnostic programs in the ECU, according to the current, voltage, resistance and other information when the oxygen sensor is working to judge whether the oxygen sensor is working normally, if there is an abnormality, there will be two fault lights to remind the driver to overhaul in time so as not to affect the normal operation of the engine.

According to experience, it is unlikely that the sensor will have a problem, and it is more likely that the line between the sensor and the ECU will be a problem, and it may be that the wire is broken or the contact is poor, or the wire is damaged and touches the body iron, which will cause an error. It is recommended to unplug the plug first to check whether the voltage signal from the ECU is normal, and then check it step by step.

1. The function of the oxygen sensor is to monitor the remaining oxygen content in the engine exhaust, so as to determine the combustion of the fuel mixture in the cylinder, and feedback the signal to the engine computer to increase or decrease the amount of fuel injection. The argument is that if the combustion of the engine is good, the amount of oxygen remaining in the exhaust is very small, and if the combustion is not good, the oxygen content in the exhaust is high.

2. The oxygen sensor is an electronic component that can convert the oxygen content into a voltage signal, which is stable and sensitive when it works, and the premise is that it must reach a temperature range of 300-500 degrees inside itself. And it is installed in the middle of the exhaust pipe, the temperature of the engine exhaust alone can not meet the working requirements, so it has a built-in heater, which is powered up and heated up when the engine is running until it reaches the normal working temperature.

3. The control of the oxygen sensor heater is usually the work of the engine computer to control the oxygen sensor heating relay, and then the current flows from the positive pole of the battery to the oxygen sensor heater through the fuse through the oxygen sensor relay. It is a heating resistor with a resistance value of around a few ohms.

If the heating resistance of the oxygen sensor fails, the oxygen sensor will not work normally, and the control of the engine injection will be affected. At the same time, the fuel and emission system fault indicator (commonly known as the engine fault light) will be lit on the instrument to remind the owner to check and repair as soon as possible.

Behind the engine exhaust manifold, a raised component is the oxygen sensor

the role of the oxygen sensor; Detect the oxygen content of the exhaust gas, provide a signal to the engine computer, and correct the amount of fuel injection, so that the engine can reach the best working condition.

Oxygen sensors are further divided into pre-oxygen and post-oxygen, with the front oxygen monitoring engine and the rear oxygen monitoring three-way catalysis.

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How to solve the problem of low heating control heater control circuit of the old Wuling Hongguang oxygen sensor? Analyze the phenomenon and analyze it. The lambda sensor control circuit is short-circuited to ground.

The problem with the oxygen sensor itself. There is a short circuit inside the installed computer board. His main reason is that after the computer board detects that its electric game is dry and the voltage is lowered, he will hold this fault**, that is, the line sensor and the electric version itself, first measure the resistance of the line control line to the ground?

If it is 0, it means that the line has a short circuit and needs to be further checked.

If the plug of Wuling Hongguang oxygen sensor cannot be unplugged, it may be due to the following reasons:

1.Locking structure: Some of the plugs of the Pulse Sensor may have a locking structure, which needs to be plugged and unplugged according to the design of the plug. You can check for locking buttons or clips around the plug and confirm if you need to release the locking mechanism first.

2.Oxygen sensor fitting viscosity: Prolonged use may cause rust, oil, and other dirt to adhere to the oxygen sensor fitting, causing the plug to get stuck in the receptacle.

In this case, you can try gently tapping the plug part with a rubber mace, slowly pulling out the oxygen sensor plug while you are doing so.

3.Turn the plug: Some plugs can be rotated. If the plug can't be pulled out, you can also rotate the plug forcefully, which tends to change the relationship between the plug and the socket, thus releasing the unplugged oxygen sensor.

It should be noted that there are certain risks in the operation of auto parts. If you're not sure how to do it or can't master it yourself, it's best to have a professional handle it.

Summary. This situation is mainly due to the injector, carbon impurities too much, the fuel injection is not smooth, the atomization is poor, this situation will occur, it is difficult to start, it needs to be removed and cleaned, clean and clean, to achieve smooth fuel injection, the engine is easy to start, reduce fuel consumption, timely maintenance to ensure stable, comfortable and safe driving. Auto repair shops can be cleaned, cleaning the fuel injector is 110 yuan, it is not recommended to use fuel treasure, remove it and use cleaning agent to clean, so it is more thorough and cleanest.

This is all related to the carbon impurities of the fuel injector, and it can be cleaned to ensure that the engine runs stably.

Please wait a minute, thanks!

Wuling Hongguang oxygen sensor does not activate sensor 1

Ask the fourth son to check the heating resistance or circuit of the oxygen sensor Xingzhishu, and a fierce fight must eliminate the fault of the oxygen sensor, otherwise the engine will enter the open-loop state, and the fuel consumption will rise back!. filer.

Hello, this Sun Cha is a dirty throttle without lead If you don't step on the accelerator, the air intake is not enough, and it is not easy to get on the car Cleaning is good for the throttle, and stepping on the clutch and turning off the ignition is also related to it Clean it in time.

This situation is mainly due to the injector, too much carbon impurities guide beam hand letter, fuel injection is not smooth, poor atomization, this situation will occur, it is difficult to start, need to be removed and cleaned, clean and clean, to achieve smooth fuel injection, the engine is easy to start, reduce fuel consumption, timely maintenance to ensure that the driving is stable, the rubber wheel is comfortable and safe. Auto repair shops can be cleaned, cleaning the fuel injector 110 yuan, it is not recommended to use fuel treasure, remove it and use cleaning agent to clean, so that the potato chain is more thorough and the cleanest. This is all related to the carbon impurities of the fuel injector, and it can be cleaned to ensure that the engine runs stably.

The spark plug only has one cylinder working, and after replacement, there is still only one cylinder working, what is going on?

Hello! The other line is caused by poor contact.

With so many fault codes, does it have anything to do with not catching fire?

Hello! In this case, it is recommended that you go to the maintenance to find a master, analyze it with an instrument, and you will know the fault of a more professional one.

Hello, dear. We're happy to answer your <>

The impact of Wuling Huiji Hongguang front oxygen sensor blockage is as follows: 1. The performance of the engine hood Kai decreases: the blockage of the front oxygen sensor will affect the working state of the engine, which will reduce the performance of the engine.

2. Increased fuel consumption: Because the front oxygen sensor is blocked, the engine performance will decrease, so the vehicle needs more fuel consumption to ensure normal driving during driving. 3. Exhaust gas emission exceeds the standard

The role of the front oxygen sensor is to detect and control the emission concentration, if there is a blockage, it will lead to the emission exceedance, which will have an impact on the environment and human health. <>

Summary. Wuling Rongguang downstream oxygen sensor heater 1 ground short circuit or line short circuit is the fault of the exhaust ternary sensor circuit. It is a fault of the sensor circuit of the exhaust ternary.

This is the exhaust three-way catalytic sensor circuit failure, or this sensor is directly damaged, you check the circuit first, the circuit is not problematic, that is, the sensor is damaged, you can replace it directly. Can.

Wuling Rongguang downstream oxygen sensor heater 1 is connected to which balance rough short circuit or line short circuit is the fault of the exhaust ternary sensor circuit. Li Zhen is faulty in the sensor circuit of the exhaust ternary block. This is the exhaust three-way catalytic sensor circuit failure, or this sensor is directly damaged, you check the circuit first, the circuit is not problematic, that is, the sensor is damaged, you can replace it directly.

Can. Wuling Rongguang downstream oxygen sensor heater 1 is connected to which balance rough short circuit or line short circuit is the fault of the exhaust ternary sensor circuit. Li Zhen is faulty in the sensor circuit of the exhaust ternary block. This is the exhaust three-way catalytic sensor circuit failure, or this sensor is directly damaged, you check the circuit first, the circuit is not problematic, that is, the sensor is damaged, you can replace it directly. Can.