What to Do When a China V Vehicle Stops Using Urea?
4 Answers
When a China V vehicle stops using urea, it is necessary to check whether the urea nozzle is crystallized and blocked, and whether the control unit has no power supply control for the nozzle. It is best to go to a maintenance center for a systematic inspection. The scientific name of automotive urea is Diesel Exhaust Fluid, which is used in diesel engines. It is a liquid used in SCR technology to reduce nitrogen oxide pollution in diesel vehicle exhaust. China V vehicles are those that comply with the "National Phase V Motor Vehicle Pollutant Emission Standards". The motor vehicle pollutant emission standards are formulated to implement environmental protection-related laws, reduce and prevent automobile exhaust pollution to the environment, protect the ecological environment, and ensure human health.
I used to drive a China V emission standard vehicle and also encountered issues with the urea system not working, which was quite a headache. Possible causes include an empty urea tank, a clogged pump, or a faulty sensor. First, check the urea fluid level by opening the hood to see the remaining amount. If it's empty, refill it with the original manufacturer-specified fluid. If the tank is full but the system still doesn't consume urea, the dashboard warning light will illuminate, indicating a fault, and the system may limit engine power, affecting driving safety. I recommend not delaying and immediately taking it to a repair shop to read the fault codes and diagnose the issue. Develop a habit of adding urea on time to avoid internal clogging caused by impurity buildup, saving both hassle and money in the long run. In short, this matter concerns both vehicle emission compliance and daily driving experience, so it's best to resolve it as soon as possible.
As a DIY-loving car owner, when encountering a non-working urea pump, I first attempt self-inspection. Step one is opening the urea tank to confirm sufficient fluid level; after refilling, I try restarting the engine as the system may automatically reset. If there are signs of blockage, I often use a soft hose to gently blow debris away from the nozzle area. Then, I use a simple OBD scanner to read fault codes - if it indicates a sensor issue, I carefully clean the contact points. However, electrical components are fragile, and amateur operations carry risks, so it's best to consult professional technicians with proper tools for thorough inspection. For prevention, using high-quality urea fluid helps avoid system freezing when parked. Addressing minor issues promptly maintains both emission control effectiveness and vehicle performance.
National V urea faults are quite common. Having driven trucks for many years, my experience is: check if the urea tank is empty, refill it with genuine fluid and test run; cleaning often works when the pump or nozzle is clogged; if the dashboard reports an error, the sensor may be aging and need replacement; not repairing it in time can lead to speed limitation, affecting safe driving. When replacing parts, find a reliable repair shop and don't skimp on money by using inferior products. For prevention, pay attention to regular maintenance. Although the urea system is small, it's crucial and cannot be neglected.
