AdBlue fault repairs in Loughborough
An AdBlue warning that won't clear, or a no-restart countdown on the dash. We find the fault and fix it.
Most modern diesels inject AdBlue into the exhaust to cut harmful emissions. When the system develops a fault, the dashboard usually tells you with a warning and, on many cars, a countdown of the miles left before the engine won't restart.
Topping up the tank doesn't always clear it, because the problem is often a sensor, the pump, the injector or a blocked line rather than the fluid level. We track down the actual fault and repair it.
Common AdBlue symptoms
- An AdBlue warning that stays on after you've topped up
- A countdown such as “no engine start in 500 miles”
- The engine management light with an emissions or NOx fault
- The gauge reading low or empty when the tank is full
- White crystals around the filler or under the car
What’s included
- Reading the fault codes and live data from the AdBlue system
- Checking the usual suspects: tank sensor and pump unit, AdBlue injector, NOx sensors, heater and lines
- Repairing or replacing the part that has failed
- Clearing the codes and making sure the warning and countdown have gone
Common questions
I've topped up the AdBlue but the warning is still on. Why?
Some cars need a short drive before the system re-reads the level. If the warning is still there after that, it's usually a fault rather than low fluid: a failed sensor or pump in the tank, a blocked injector or a NOx sensor are all common causes. It needs a diagnostic check.
Can I keep driving with an AdBlue warning?
Normally yes for now, but don't ignore the countdown. When it reaches zero the car is designed not to restart once you switch it off, so get it looked at while there are still plenty of miles left.
What is AdBlue?
It's a fluid made of urea and de-ionised water that is sprayed into the exhaust of a diesel engine. It reacts with the exhaust gases to turn nitrogen oxides into nitrogen and water vapour. It has its own tank and filler, and it never goes in with the fuel.
Related services
Diagnostics
Warning light on, or something not right. We find the cause before anything gets replaced.
Fuel injector repairs
Rough running, smoke or poor starting traced to the injectors and put right.
MOT pre-check
The common MOT fail points checked before the test. We can take the car to the test station for you too.
See all services. We look after cars from Loughborough, the villages around it and the rest of Leicestershire.
Book a slot that fits around work
Open Monday to Friday 5pm to 10pm, Saturday 10am to 3pm.