What is the solution for urea not burning in the vehicle?
3 Answers
The solution for urea not burning in the vehicle is: 1. Check whether the post-processing wiring harness and sensors are in proper contact; 2. Check whether the urea pipeline is normal; 3. Check whether the urea pump is working properly; 4. Check whether the urea nozzle is working properly, and replace it in time if there is a problem. The reasons why urea does not burn in the vehicle: 1. Problems in post-processing, resulting in urea not burning; 2. Blockage of the pipeline or filter; 3. Failure of the heating relay leads to low urea temperature and crystallization blockage, preventing urea from burning. The function of automotive urea is to convert nitrogen oxides in vehicle exhaust into harmless nitrogen and water, so that the vehicle meets the national exhaust emission standards.
I've also encountered issues with the urea system not working. At that time, the fault light on the dashboard was on, and the acceleration was sluggish while driving. I suspected it might be a problem with the urea injection. There are many possible causes, with nozzle clogging being a common one. After prolonged use of diesel vehicles, impurities can accumulate inside, preventing urea from entering the exhaust pipe for combustion. The solution is to first flush the nozzle with a specialized cleaner and try adding fresh urea. If that doesn't work, then check if the sensor or control module is damaged. Sometimes, if the vehicle is left unused for too long, the urea can expire or degrade in quality, leading to issues. I recommend that owners regularly refill with automotive-grade urea to avoid impurities mixing in. Additionally, starting the vehicle monthly to let the system circulate can prevent solidification. Safety-wise, it's important not to force driving at high speeds, as this can lead to excessive emissions, damaging the vehicle and polluting the environment.
If the urea isn't burning, start by checking the basics. I prefer to go from easy to difficult: first check the urea tank level and top it up if low, using reputable brands; then inspect the nozzle for blockages—a small brush can clean it. If the dashboard shows a warning, use a diagnostic tool to read the fault code and check sensor status. Occasional system hiccups during driving can often be resolved by turning the engine off and restarting. Deeper issues might involve wiring problems or control unit failures, requiring professional equipment for adjustment. To keep the system running smoothly, perform maintenance every six months to clean carbon deposits. If you notice any abnormalities while driving, slow down and pull over to inspect—don't take risks.
