Professional AdBlue Repair Services Across the UK

Is your vehicle displaying AdBlue warnings, a ‘No start’ countdown, or suffering from performance issues? STX Tuning specialises in diagnosing and repairing AdBlue system faults—including injector blockages, pump failures, sensor faults, and software-related problems.

Client Reviews

Why Timely AdBlue Repairs Matter

Fast Diagnosis & Reliable Repairs for AdBlue System Faults

Leaving AdBlue issues unresolved can lead to engine limp mode, failed emissions tests, or your vehicle refusing to start. At STX Tuning, we offer proper, long-term repairs—not just quick warning light resets. Our solutions restore full system functionality while helping you stay compliant with UK emissions standards.

Why STX Tuning is the Right Choice for Adblue 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 AdBlue Problems We Fix

Persistent AdBlue system malfunction warning lights
NOx sensor faults causing engine errors
AdBlue injector and pump failures disrupting dosing
Engine limp mode due to AdBlue issues
No-start countdown warnings blocking vehicle startup

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’s the difference between an AdBlue ‘fix’ and a ‘repair’?

A fix may involve temporary resets or bypasses. A proper repair addresses the mechanical or electrical fault, such as replacing a failed injector or faulty sensor.

What are the most common AdBlue system issues?

What are the most common AdBlue system issues? Typical faults include blocked injectors, low-pressure pumps, faulty NOx sensors, wiring issues, and corrupted software.

Can you repair AdBlue systems on all makes and models?

Yes. We work on a wide range of diesel vehicles from brands like Audi, BMW, Ford, Mercedes, Peugeot, Volkswagen, Land Rover, and more.

How long does an AdBlue repair take?

Most AdBlue repairs are completed within 1–2 hours. We’ll always keep you informed if additional time is needed.

Do your repairs come with a guarantee?

Yes, all repairs are backed by a service guarantee. Ask us for specific terms based on the fault and vehicle.

Will my vehicle pass an MOT after an AdBlue repair?

Yes, our repairs are designed to restore proper system operation and help ensure your vehicle meets MOT emissions standards.