AdBlue Solutions

AdBlue is a urea-based fluid used in modern diesel vehicles to reduce harmful nitrogen oxide (NOx) emissions through a process called Selective Catalytic Reduction (SCR). While essential for meeting emissions standards, AdBlue systems can sometimes cause issues such as warning lights, increased consumption, or system malfunctions.

Common AdBlue Issues

AdBlue systems, while effective at reducing emissions, can sometimes cause frustrating problems for vehicle owners. Common issues include:


  • AdBlue Warning Lights – Often triggered by low fluid levels, sensor faults, or injection problems.


  • Crystallisation or Blockages – AdBlue can crystallise and block injectors or lines, especially in cold weather or if left unused.


  • Faulty Sensors – Malfunctioning level sensors or NOx sensors can lead to false warnings or prevent the vehicle from starting.


  • Excessive AdBlue Consumption – May indicate an underlying issue with the Selective Catalytic Reduction (SCR) system.


  • Non-Start Conditions – Some vehicles will refuse to start if the AdBlue system detects a fault or runs dry.


At Hill Vehicle Services, we use advanced diagnostics to pinpoint AdBlue issues and offer effective, road-legal solutions to get you back on the road.

Our Comprehensive

AdBlue Solutions Process

01

Initial Diagnosis

Using dealer-level diagnostic tools, we scan your vehicle’s AdBlue and SCR system to identify any faults, sensor failures, or injection issues. We provide a full report and explain the problem in plain terms.

02

Repair & Clean

We carry out precise repairs—replacing faulty sensors, fixing injectors, or cleaning crystallised components. We will ensure every part of the system functions correctly, avoiding costly future breakdowns.

03

Reset & Road Test

After the repair, we reset system warnings and perform a thorough road test to confirm everything is running as it should. You’ll leave with peace of mind, knowing your AdBlue system is fully restored and MOT-compliant.

Callie. D

Highly recommend friendly & extremely helpful. My car was taken in for diagnostics and repaired the same day, I was expecting it to be a big / expensive problem but this garage was extremely thorough & honest and ended up costing a lot less that I expected.

Sophie. D

Mike found the root cause of the issue and there was no problem with the filter itself. Mike rectified the issue and I collected my car the next day, amazing service and great people!!

Judith. S

What a great company, when I called them my car had previously been misdiagnosed at a different garage at a significant cost, when I spoke to Mike he asked me a lot of questions, and I dropped my car at a easy location, he had the car for a few hours and I had a full assessment report and he talked me through what was required, later that day my car was ready for collection dash light free!! Would highly recommend

Frequently Asked Questions About AdBlue Solutions

What is AdBlue and why does my vehicle need it?

AdBlue is a non-toxic, urea-based fluid injected into the exhaust system of diesel vehicles to convert harmful NOx emissions into harmless nitrogen and water vapour. It’s required in many modern diesel vehicles to comply with Euro 6 emissions regulations.

What are the common problems with AdBlue systems?

The DPF removal process involves physically removing the filter from the exhaust system and reprogramming the vehicle's ECU to ensure optimal performance without the DPF. This ensures that the vehicle runs smoothly and efficiently post-removal.

What happens if I run out of AdBlue?

If your AdBlue tank runs empty, most vehicles will not restart until it’s refilled. Some may even limit performance or enter limp mode. It's important to top up AdBlue promptly when warned to avoid being stranded.

Is AdBlue removal legal?

No. Removing or disabling the AdBlue system is illegal for vehicles used on public roads in the UK. It will result in MOT failure, potential DVSA penalties, and can invalidate your insurance. Our AdBlue removal service is available strictly for off-road use only, such as motorsport or agricultural vehicles that are not registered for road use.

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