AdBlue Problems Explained – Causes, Symptoms and Permanent Solutions
Many drivers first hear about AdBlue when a warning light suddenly appears on their dashboard. What starts as a simple top-up reminder can quickly turn into repeated faults, limp mode, or even a complete no-start situation.
At STX Tuning in Slough, we speak to customers every day who are frustrated by ongoing AdBlue problems. Here’s a clear guide to the most common issues, what causes them, and how they can be resolved.
What Is AdBlue and Why Do Problems Happen?
AdBlue is a urea-based fluid injected into the exhaust system to help reduce emissions. While the idea is simple, the system itself is complex and made up of pumps, sensors, injectors, and a tank. As vehicles age, any of these parts can fail, leading to persistent issues.
Common AdBlue Symptoms We See
Warning lights that stay on even after topping up
No-start countdown timers that immobilise the vehicle
NOx sensor faults causing limp mode
Crystallisation inside the tank and injectors, leading to blockages
Failed AdBlue pumps or BMW AdBlue sensors needing costly replacement
These problems affect a wide range of cars and vans including the Audi A4, Audi Q5, Citroën Berlingo, Ford Transit, Mercedes Sprinter, Peugeot Boxer, Nissan Qashqai, Volkswagen Transporter, and Land Rover models.
The Cost of AdBlue Repairs
Main dealer repairs for AdBlue systems can be very expensive. It’s not unusual to see bills running into thousands, and in many cases the same fault reappears months later.
Permanent Solution – AdBlue Delete
At STX Tuning, we offer a permanent AdBlue delete service that disables the system electronically through safe ECU programming. This avoids the need to replace costly parts and prevents the same faults from coming back.
Benefits include:
Permanent guaranteed solution
No more AdBlue warning lights or countdowns
Available for both cars and vans
Can be combined with an economy remap for fuel savings or a performance remap for extra power
Offered at our workshop in Slough or via our mobile service across England
Important Information
AdBlue delete is classed as an emissions modification. It is provided strictly for off-road, motorsport, agricultural, or export use only, and is not legal for vehicles used on public roads in the UK.
Speak to an AdBlue Specialist Today
If you’re dealing with persistent AdBlue faults, STX Tuning can help. Call us on 01753 439130 to book an appointment in Slough or arrange our mobile service anywhere in England.