Expert Urea Repair Services Across the UK

Urea-based AdBlue systems are designed to reduce emissions in modern diesel vehicles, but they’re often prone to failure—leading to dashboard warnings, limp mode, and even complete no-start conditions.

Client Reviews

Expert Diagnosis Backed by Proven Results

We Fix the Root Cause—Not Just the Warning Light

At STX Tuning, we don’t just clear fault codes—we identify and address the actual problem behind your Urea system fault. With advanced diagnostic tools, brand-specific knowledge, and over a decade of hands-on experience, we deliver solutions that last. Whether you’re preparing your vehicle for export, agricultural use, or motorsport, we ensure it’s running reliably and efficiently.

Why STX Tuning is the Right Choice for Urea Repair

10+ Years of Expertise

Decade-long experience in ECU remapping and performance upgrades with deep technical know-how.

400+ Five-Star Reviews

Proven customer satisfaction across hundreds of happy clients—your car is in trusted hands.

Specialists in Vehicles

Tailored tuning solutions specifically for Volkswagen, Audi, SEAT, Skoda, and BMW models.

Mobile Service Across England

Can’t visit? No problem. Our expert mobile technicians come to you—fast and hassle-free.

Advanced Emission Solutions

From AdBlue delete to NOx sensor bypass, we fix common diesel issues safely and effectively.

Custom & Safe ECU Remapping

Every tune is carefully calibrated for optimal performance, reliability, and drivability.

Common Urea Problems We Fix

AdBlue system malfunction and recurring warning lights
NOx sensor failures causing engine derates and limp mode
Urea injector and pump faults preventing proper dosing
AdBlue countdown and no-start conditions
Fault codes such as P20EE, P204F, P229F, P207F, P2200

Common AdBlue Fault Codes

P20E8 Reductant Pressure Too Low
P204F Reductant System Performance
P207F Reductant Quality Performance
P20EE SCR NOx Catalyst Efficiency Below Threshold
P2200 NOx Sensor Circuit Bank 1
P2201 NOx Sensor Circuit Range/Performance Bank 1
P229F NOx Sensor Range/Performance Bank 2
P2BA9 NOx Exceedence – Insufficient Reagent Quality
P2BAE SCR System Efficiency Below Threshold
P2BAC NOx Exceedence – Deactivation of EGR

Everything you need to now

What is a Urea system and why does it fail?

The Urea/AdBlue system reduces harmful nitrogen oxide emissions. It can fail due to sensor faults, low fluid quality, dosing pump issues, or software errors.

Can you fix a Urea system without replacing parts?

In many cases, yes. We use software-level solutions and diagnostics to avoid unnecessary part replacements.

Is this service legal for road use?

No. Urea repair or modification is only legal for vehicles used off-road, in motorsport, agriculture, or being exported.

Will the service stop AdBlue warnings and limp mode?

Yes, our repair service typically resolves AdBlue-related issues including warnings, limp mode, and no-start countdowns.

Which vehicles do you support?

We work on most diesel models from Audi, BMW, Mercedes, Ford, Peugeot, Citroën, Volkswagen, and more.

Can you come to me?

Yes, we offer mobile Urea system repair throughout most parts of England. Contact us to check coverage in your area.

We Provide Urea Repair for All Major Diesel Models:

Audi: A3, A4, A5, A6, Q3, Q5, Q7, Q8
BMW: 1 Series, 3 Series, 5 Series, X3, X5, X6
Ford: Focus, Mondeo, Kuga, Transit, Ranger
Mercedes: C-Class, E-Class, Sprinter, Vito
Peugeot: 208, 308, 508, Boxer, Partner, Expert
Citroën: C3, C4, C5, Berlingo, Dispatch, Relay
Volkswagen: Golf, Passat, Tiguan, Crafter, Transporter

Land Rover: Range Rover, Discovery, Evoque, Velar
Renault: Megane, Kadjar, Trafic, Master, Kangoo
Toyota: Hilux, Proace, Land Cruiser, RAV4
Hyundai: Santa Fe, Tucson, i800 Van
Jaguar: XE, XF, F-Pace, E-Pace
…and many more diesel makes and models.

How We Save Your Time & Money

No more frequent AdBlue top-ups
Avoid expensive NOx sensor and injector replacements
No more unexpected breakdowns or limp mode activations
Convenient on-site service with no garage visits
Safe, fast, and 100% permanent solution

STX Tuning – The Leading Mobile AdBlue Removal Experts in England
01753 439130
WhatsApp for fast quotes & bookings