Common faults and solutions of urea pump;
1, the car runs very weakly, and the alarm device on the dashboard is ringing.
This problem can basically be locked in the sensor and urea pump, mainly because the sensor reading exceeds the standard, which leads to the torsion and weakness of the car.
2. The car can still work during the day in winter, but the pump can't work normally at night?
This is the most common in northern winter. First, check whether there are urea crystals in the urea tank and urea pipeline. In fact, as long as the hot water is sucked into the pump through the liquid inlet pipe, the crystal can be dissolved. Another unusual problem is that the heating device in the pump is damaged, so that the urea pump will crystallize at both ends every three days.
3. After running for a while, the car began to reduce the torque, urea and a small amount of impurities in the urea tank?
This is mainly because the filter screen is blocked, the liquid absorption capacity of urea pump decreases, and the nitrogen and oxygen value exceeds the standard and begins to decline.
The motor is loud, but it doesn't pump liquid. What happened?
The motor is damaged and needs a new one.
Adding water or removing the alarm device OBD is harmful.
Compared with troubleshooting, urea maintenance is also very important. Some drivers think that the principle of urea for vehicles is very simple, and adding water can save costs. The vehicle urea solution with a concentration lower than 32.5% diluted with water can not reduce the exhaust gas, and the emission of nitrogen oxides is still too high, which optimizes the environment. Guo Si? The standard is to shout slogans in vain In addition, adding water for a long time will damage the parts of SC R system, and the total cost of replacing a set is about 6.5438+0 million.
In order to save costs, some drivers will also remove the alarm device OBD for vehicle urea, or modify CPU data to avoid filling vehicle urea. This seems to reduce a lot of trouble, but because the engines of four countries and five countries often burn fully in order to reduce PM emissions, the exhaust pollution even exceeds that of the three countries. At the same time, it will cause the crystallization of residual urea solution in vehicles, block pipelines and nozzles, and the catalyst will lose its catalytic effect, resulting in maintenance costs of 30,000-50,000 yuan. Although this approach reduces the cost of using vehicles in the short term, it is actually not worth the loss. (Photo/Text/Photo: Du) Xingrui Li ONE Model Y Model X Gaohe HiPhi X Zero Run T03 @20 19