What is the method to eliminate the urea warning light alarm?
2 Answers
Urea warning light alarm elimination methods are: 1. Replace the urea solution; 2. Replace the water heating valve; 3. Replace the urea pump and power supply module connector. The reasons for urea warning light alarm are: 1. Urea pressure is too low, urea consumption is high; 2. Insufficient power, urea consumption is too high or too low; 3. Instrument panel malfunction. The effects of not using urea in vehicles are: 1. Excessive emissions, causing environmental pollution; 2. Chemicals in the vehicle system will oxidize, the urea nozzle will become blocked, rendering the entire system useless; 3. Reduced vehicle power. The role of urea is: to treat exhaust gases, reduce pollutants in the exhaust, and optimize engine performance and fuel consumption.
When I see the urea warning light, my first reaction is to immediately check the AdBlue level, given my extensive experience driving diesel pickups. Usually, this light indicates low urea or a malfunction. First, open the trunk to locate the urea tank—if the level is below half, buy genuine AdBlue and top it up. Don’t skimp on brands; cheap, low-quality urea can clog the system. After refilling, drive a kilometer or two, and the light should go off. If it doesn’t, check for leaks or aging sensors. In winter, urea freezing can also trigger the alarm, which resolves once it warms up. But if the light stays on, there might be a system error—don’t force the drive to avoid speed restrictions or breakdowns. Use an OBD scanner to read the codes or visit a repair shop promptly to prevent higher costs. Make it a habit to check the urea level every time you refuel—prevention is easier than dealing with warnings. Once, I faced a nozzle failure due to poor AdBlue, costing thousands to fix—a lesson learned the hard way.
