The AdBlue system, also known as SCR system (Selective Catalytic Reduction), it's a technology used in modern diesel vehicles for reduce pollutant emissions and comply with environmental regulations.
When this system fails, it's common for them to appear dashboard warnings, power limitations, or even blocking the vehicle's start. That's why it's essential to carry out a specialized diagnosis of the AdBlue system to correctly detect and solve the problem.
At our workshop, we offer advanced AdBlue system diagnostics, using professional equipment to identify faults in sensors, injectors, pumps, and SCR system components.
What is the AdBlue system and how does it work?
The AdBlue it's a liquid composed primarily of urea and demineralized water that is injected into the vehicle's exhaust system.
Its function is to transform the Nitrogen oxides (NOx), which are highly polluting, in nitrogen and water vapor, reducing diesel engine emissions.
This process is carried out using several components of the SCR system, such as:
- AdBlue tank
- System pump
- AdBlue injector
- NOx Sensors
- Electronic control unit
When one of these elements fails, the system can activate warnings or limit the vehicle's operation.
Symptoms of AdBlue system failures
When the AdBlue system has problems, your vehicle usually displays various warning signs.
The most common symptoms include:
- AdBlue warning light on the dashboard
- Emissions-related error messages
- Kilometer countdown for blocked start
- Engine power reduction
- Higher fuel consumption
- Emissions system faults
In many modern vehicles, if the issue isn't resolved, the system can prevent the vehicle from starting after a certain number of kilometres.
Main causes of AdBlue system failures
1. Defective NOx sensor
The NOx sensors measure emission levels in the exhaust system. If these sensors fail, the SCR system might interpret that there's an issue with the gas treatment.
2. Clogged AdBlue Injector
The injector responsible for spraying AdBlue can get clogged with urea crystals, which prevents the system from working properly.
3. System pump faults
The AdBlue pump is responsible for sending the fluid from the tank to the injection system. If the pump fails, the system cannot correctly perform the emissions reduction process.
4. Problems in the AdBlue tank
The tank may experience issues such as:
- Defective level sensors
- Liquid crystallization
- System heater faults
5. Electronic or software issues
In some cases, the problems might be related to errors in the SCR system control unit, which requires advanced electronic diagnostics.
Our AdBlue system diagnostic service
In our workshop, we have professional diagnostic equipment capable of in-depth analysis of the SCR system and AdBlue operation.
Our service includes:
- Complete electronic vehicle scan
- Reading and interpretation of error codes
- SCR system diagnosis
- NOx sensor inspection
- AdBlue injector and pump check
- Emissions system inspection
This allows us to accurately identify the source of the problem and apply the correct solution.
Need a trustworthy workshop?
If you need a reliable workshop in Palma de Mallorca, at Zamule Cars We specialize in electromechanics, diagnostics, and comprehensive maintenance. We offer no-obligation advice.
Write us on WhatsApp | Tel: 682 931 164
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