Mobile AdBlue Diagnostics & SCR Repair
At Diesel Additive Solutions, we provide professional mobile AdBlue and SCR diagnostics, fault finding and repair services.
AdBlue & SCR Diagnostics
NOx Sensor Fault Diagnosis
AdBlue Pump & Injector Testing
100% Mobile Diagnostic Service
We provide mobile AdBlue and SCR diagnostics for cars, vans, 4×4s and motorhomes. Our technicians diagnose system faults before recommending the appropriate repair, helping you understand the cause of warning lights, countdown messages and AdBlue system problems.
What Is AdBlue and How Does the SCR System Work?
AdBlue® is a diesel exhaust fluid used by many modern diesel vehicles with Selective Catalytic Reduction (SCR) systems. It is injected into the exhaust system to help reduce nitrogen oxide (NOx) emissions.For more information on how SCR systems work, see the GOV.UK vehicle emissions guidance.
When an AdBlue or SCR system develops a fault, the vehicle may display warning lights, reduced range messages or a “no start” countdown. These issues can be caused by NOx sensors, AdBlue pumps, injectors, heaters, wiring or other system components.
Our professional diagnostics help identify the underlying fault so the appropriate repair can be recommended. We provide mobile AdBlue and SCR diagnostics, fault finding and repair services.
Here’s a quick look at how Adblue® works:
How Does AdBlue Diagnostics Work?
AdBlue diagnostics involves connecting professional diagnostic equipment to the vehicle to identify stored fault codes and relevant SCR system data. The technician then assesses the results to determine the likely cause of the problem and recommend the appropriate repair.
Our Diagnostic Process May Include:
1. Vehicle Assessment
We discuss the warning lights, symptoms and vehicle history.
2. Diagnostic Scan
Professional equipment is used to read relevant ECU and SCR fault codes.
3. System Testing
Components such as NOx sensors, AdBlue pumps, injectors and heaters may be checked where appropriate.
4. Fault Identification
The diagnostic results are assessed to identify the likely source of the issue.
5. Repair Recommendation
We explain the appropriate repair based on the diagnostic findings.
Our service is available for any diesel vehicle:
Cars
Vans
4×4’s
motorhomes
Areas We Cover
We currently cover the areas listed below and will be extending our coverage in due course!
- 20 Mile radius of
- Cardiff
- Worthing
- St Helens
- Bradford
We will travel outside of the area for fleet services and multiple vehicle bookings.
At Diesel Additive Solutions, we are dedicated to providing AdBlue and SCR diagnostic to customers across a wide geographic area. Our comprehensive coverage ensures that, no matter where you are, you can access the high-quality products and services you need to keep your vehicles running smoothly.
With a focus on reliability and professionalism, our comprehensive coverage guarantees access to premium products and services essential for maintaining the smooth operation of your vehicles. Count on Diesel Additive Solution to be your trusted partner in keeping your fleet running efficiently and responsibly.
Areas We Cover
Frequently Asked Questions
Who are Diesel Additive Solutions?
Diesel Additive Solutions are a group of specialists in Diesel Exhaust Fluid solutions based throughout the UK. With an average of 18 years of experience, our technicians use the latest ECU programming equipment and proprietary software to provide top-quality service.
Why is my vehicle saying “AdBlue range” or “No start in X miles”?
This message means your AdBlue tank is running low. If it runs out, your vehicle may refuse to start. It’s a built-in emissions control feature. Top up the tank as soon as possible to avoid problems.
My vehicle won’t start — is it because of the AdBlue system?
Yes. If the system detects low AdBlue or a fault, many vehicles prevent the engine from starting. Refilling AdBlue and resetting the system is usually required.
I topped up AdBlue, but the warning light is still on — why?
Sometimes the system needs a few miles to reset. If the warning persists, there may be a faulty sensor or the system may require a diagnostic reset.
How often do I need to refill AdBlue?
Most vehicles need a refill every 5,000 to 10,000 miles, depending on your driving style and vehicle model. The dashboard will notify you when it’s time.
How Does an AdBlue Diagnostic Work?
An AdBlue diagnostic uses professional diagnostic equipment to read relevant fault codes and system data. The technician assesses the results to identify potential faults affecting the AdBlue or SCR system, such as NOx sensors, pumps, injectors, heaters or related components.
Can I use any AdBlue, or does it have to be a specific brand?
You can use any brand that meets the ISO 22241 standard. Avoid expired or contaminated AdBlue to prevent system damage.
What happens if I accidentally put AdBlue in the diesel tank?
Do not start the engine. AdBlue will severely damage your fuel system. Contact a professional mechanic immediately to drain and flush the tank.
Why is my vehicle using so much AdBlue?
Excessive consumption might signal a faulty sensor or emissions issue. A diagnostic check will help identify and resolve the problem.
My AdBlue system keeps failing — what can I do?
If faults are frequent, it could be due to a failed sensor, poor fluid quality, or software issues. In off-road or export situations, some consider AdBlue delete solutions where legally allowed.
Can cold weather affect the AdBlue system?
Yes. AdBlue can freeze below -11°C (12°F). Most vehicles have a built-in heater. If yours isn’t working, a component may be faulty and should be checked.
How much does it cost to fix an AdBlue system fault?
Minor fixes like sensors may cost £150–£300, while full system repairs can exceed £1,000. Start with a diagnostic test to avoid unnecessary expenses.
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