AdBlue delete
Countdown timer ticking down, warning light that won't clear, or an AdBlue system that keeps crystallising and failing no matter how often you top it up? We diagnose the fault and delete the system on qualifying vehicles, at your home or workplace.
What's actually going wrong
AdBlue (also called Diesel Exhaust Fluid, or DEF) is injected into your exhaust to break down harmful NOx emissions before they leave the car. When the system plays up, it's usually one of a few things:
- Crystallised AdBlue in the lines or injector, often from a slow leak or contamination
- A faulty injector or NOx sensor, which can make the system think there's a fault even when the fluid's fine
- A failing AdBlue pump or heater, especially in cold weather when the fluid can freeze
- A dashboard countdown that won't stop regardless of how much AdBlue you add — a sign the fault is electrical or mechanical, not fluid level
Some modern diesels will refuse to restart once that countdown hits zero, which is exactly the situation most people call us in.
What we do about it
We connect proper diagnostic kit to your vehicle to find out whether it's a genuine fault or a fixable sensor issue, and talk you through what we find before any work starts. On qualifying vehicles, we can delete the AdBlue system entirely — removing the dependency on a system that's already causing you problems.
We'll always tell you honestly if a repair makes more sense than a delete for your situation.
Why AK Performance Tuning
Mobile.
We come to your driveway or workplace — no dropping the car off and waiting.
Adam Kirkland does the work himself.
No call centre, no van full of strangers — you speak to the person who fixes it.
4.8★
from 146 Google reviews, plus a Gold Customer Service Award on WhoCanFixMyCar.
Honest diagnosis first.
We explain what we find before recommending a delete.
Frequently asked questions
Is an AdBlue delete legal?
Not on a vehicle used on public roads, because the vehicle no longer meets its emissions standards. An AdBlue delete is for off-road and competition vehicles. For a road vehicle we'll diagnose and repair the AdBlue fault instead.
Why do I keep getting an AdBlue warning even after topping up?
If the warning doesn't clear after adding fluid, the fault usually isn't the fluid level itself — it's more likely a sensor, injector or pump issue that needs diagnosing properly rather than guessing at.
My Peugeot Boxer keeps showing an AdBlue warning — is that common?
Yes — it's one of the vans we see this on most often, usually down to the injector or NOx sensor rather than the fluid itself. Worth a proper diagnostic rather than repeatedly topping up.
How much does an AdBlue delete cost?
Every job's priced on your vehicle and what's actually involved, so we don't quote a blanket figure here — but the quote itself is always free, there's no call-out charge, and the work comes with a 12-month guarantee. Call us or send a quote request for an accurate price. Get a Free Quote
Get in touch
Tell us what your AdBlue system is doing and we'll come and take a proper look.