The most common AdBlue system problems and how to prevent them – tips for heavy-duty vehicle operators
The AdBlue system helps reduce nitrogen oxide emissions from diesel vehicles, but issues such as crystallization, cold-weather problems, sensor failures, and tank contamination can occur. Using high-quality AdBlue solution, regular cleaning, proper storage, and specialized additives in cold climates can help prevent these issues, keep the system operating efficiently, and avoid costly repairs.
Why Is the Condition of the AdBlue System Important?
AdBlue is a urea solution used in SCR systems (Selective Catalytic Reduction) to reduce nitrogen oxide emissions from diesel vehicles. Thanks to AdBlue, vehicles comply with strict emission standards.
However, problems in the AdBlue system can quickly lead to:
✔ expensive repairs
✔ downtime
✔ increased consumption and emissions
This is why regular maintenance and the use of correct chemicals play a crucial role.
Most Common AdBlue System Issues
1. Crystallization
- AdBlue can dry out and form crystals in injectors, hoses, and connectors.
- This results in blockages and error messages.
2. Freezing Issues
- AdBlue freezes at around -11°C (12°F).
- Cold weather can prevent the system from operating correctly until it thaws.
3. Sensor Faults
- Level, temperature, or quality sensors may become dirty or fail.
- This causes error messages and sometimes power limitations for the vehicle.
4. Tank Contamination
- Old or improperly stored AdBlue can contain sediment that contaminates the system.
How to Prevent Problems
✅ Always use high-quality AdBlue solution
✔ For example, Yara AdBlue® meets all ISO standards.
✅ Clean and check the system regularly
✔ Hoses, filters, and tanks should be inspected during maintenance.
✅ Use additives for winter operation
✔ K-10 Arctic SCR Urea Booster: prevents freezing and crystallization.
✔ Kent Urea Anti Crystal: prevents crystal formation and makes thawing easier.
✅ Store AdBlue under proper conditions
✔ Avoid temperature fluctuations and use sealed containers.
Spare Parts and Accessories for the AdBlue System
In our online store, you'll find:
✅ Sensors and filters → view selection
✅ AdBlue pumps and hoses → browse products
✅ Additives and chemicals → order easily
Summary
AdBlue system problems are often preventable. By using quality products and keeping the system clean, you save both time and money.
Order the correct spare parts and additives directly from our online store and keep your fleet on the road – without unnecessary downtime!