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An AdBlue warning usually means the SCR system has failed a self-test, not that the tank is empty. NOx sensors, the dosing injector, the tank heater and pump, and the level sensor are the usual causes. The car then counts down the miles until it will refuse to start, so it needs diagnosing from the fault code rather than topping up. We diagnose and repair AdBlue systems in Maidstone, and where a repair is uneconomic we explain the options and the law honestly.
WARNING NOTICE: RACE MODIFIED VEHICLES AND THE LAW
ADBLUE IS EXPENSIVE TO FIX!
When Adblue systems goes wrong it can be a real headache and very expensive to fix. In some cases it can even leave the car stranded being unable to re-start the engine. It’s quite a common occurrence for an Adblue system to have faults with the sensors or tank.CAN ADBLUE BE REMOVED?
We offer an Adblue fix service using only software alone…also known as an AdBlue delete. using special diagnostics equipment and software we are able to re-calibrate the AdBlue system to remove the faults from the system. The whole process takes around 2-3 hours for most vehicles.WHAT IS ADBLUE?
AdBlue is used to reduce NOx levels by spraying in a urea-based additive into the catalytic system. The AdBlue fluid has a operate tank and is sprayed / injected into the exhaust system just before the SCR catalyst. This spray of AdBlue into the exhaust gasses creates a chemical reaction inside the Cat which results in NOx being converted into Nitrogen and Water Vapor. This process then helps produce cleaner emissions.So why would you want our Adblue delete service? Good question.
All AdBlue and SCR systems are very complex with lots of electronic sensors, module control units and pumps.,…they can fail at any time! A vehicle which is used regular will consume a large amount of AdBlue. Keeping the Adblue topped up is a must as when it runs out most vehicles are designed not to re-start. We offer an AdBlue delete service which will electronically disable the AdBlue system along with removing the associated dashboard lights and warning messages. Adblue delete is normally completed by reprogramming the engine management system (ECU), however some vehicles will require a small electronic unit to be hardwired into the vehicle. Get Custom Adblue QuoteEmissions equipment – important
Removing or disabling a DPF, EGR or AdBlue/SCR system makes a vehicle illegal to use on a UK public road and will fail an MOT. We supply these services for off-road use only – competition, private land, or export. Ensuring your vehicle is used lawfully is your responsibility, and our terms and conditions apply.
If your vehicle is road-going, ask us about repair instead. We diagnose and fix AdBlue, DPF and EGR faults, which keeps it legal.
Questions we get asked
Why is my AdBlue warning on when the tank is full?
Because the warning is the SCR system reporting a fault, not a level. A failed NOx sensor, a crystallised or blocked dosing injector, a tank heater or pump fault, or a level sensor reading wrongly all trigger the same warning.
What does the no-start countdown mean?
Euro 6 rules require the car to refuse to start once the AdBlue system has been faulty or empty for a set distance, typically shown as a countdown of miles. The car drives normally until it reaches zero, so get it diagnosed before then; once it has locked out it usually needs the fault cleared with a diagnostic tool after the repair.
Which AdBlue fault codes are common?
P20EE (NOx catalyst efficiency below threshold), P204F (reductant system performance) and P2BAD (NOx exceedance) are the ones we see most, along with codes for the reductant level, heater and pressure. The code tells us where to start; it rarely means the whole system needs replacing.
Is it legal to delete or disable AdBlue?
Not on the road. In the UK it is an offence to use a vehicle with its emissions equipment removed or disabled, and a car whose SCR system has been tampered with fails its MOT. We repair AdBlue systems; deletes are only supplied for vehicles that are not used on the public road.
How much does an AdBlue repair cost?
It depends entirely on what has failed. We diagnose first for a fixed fee and quote before fitting any part; a NOx sensor is the most common single repair and is a fraction of the cost of a new tank unit.
Can I keep driving with the AdBlue warning on?
Yes until the countdown reaches zero, and the car may be in reduced power in the meantime. Do not let it reach zero away from home: once locked out it will not start until the fault is fixed and cleared.
