Citroen C4 Mobile AdBlue Delete & Removal

An ongoing warning light after a refill usually signals a hardware fault in the system. It could be a problem with the AdBlue pump, an injector, or a sensor. Our AdBlue delete software is designed to bypass these faults entirely.

Yes, it is. The AdBlue removal software we install deactivates the entire system that triggers the countdown, which prevents the vehicle from entering a non-start state.

Certain later model C4s are fitted with a protected engine computer (ECU). This security measure requires a specialist unlocking procedure before our software can be applied. We can determine if your vehicle needs this and will always agree any additional charge with you before proceeding.

Relying on the model year or the badge on your Citroën C4 is not a reliable way to check for AdBlue. The best method is to provide us with your registration number. This allows us to check the vehicle's specific engine, ECU type, and emissions data to confirm compatibility and give you a quote.

SCR is an abbreviation for Selective Catalytic Reduction, which is the official term for the AdBlue system. NOx sensors are a key part of this system, measuring nitrogen oxides in the exhaust. A faulty NOx sensor is a very frequent cause of AdBlue error messages on the Citroën C4.

Our technicians have specialised in AdBlue systems since they were first widely introduced over 10 years ago. The software modification is very reliable and we include a lifetime warranty on the software itself, subject to our terms.

We carry out the work at your chosen address. The appointment usually lasts between one and two hours, with the final time depending on the specific ECU in your car and if it needs to be unlocked.

Our base is near Slough, and our mobile technicians cover London, the South East, and many other parts of England. All bookings are.

Pricing varies according to the exact engine and ECU combination in your C4. For a firm, no-obligation quote, please get in touch with your vehicle registration and postcode.

Yes, they are two terms for the identical software service we provide. The process is done entirely through software; we do not take out the AdBlue tank or any other physical parts from your car.

UK C4 models with BlueHDi diesel engines use AdBlue for their SCR system. Earlier HDi and e-HDi diesels generally do not, and petrol and electric versions do not. Filler location varies: some versions have the AdBlue filler under the boot floor rather than beside the diesel filler. Send your registration to confirm fitment.

The second-generation C4 hatchback offered 1.6 BlueHDi engines during the later part of its production run, broadly from around 2014/2015 to 2018. The third-generation C4, launched around 2020/2021, has been offered with 1.5 BlueHDi engines. C4 Cactus and C4 Picasso/SpaceTourer have separate engine ranges and production dates. Please send your registration so we can check the exact version.

An AdBlue or UREA warning can indicate low fluid, an SCR fault or a restart countdown. The precise message matters. Once the relevant countdown reaches zero, restarting may be inhibited after the engine is switched off.

Low AdBlue or a confirmed SCR fault can trigger a countdown. Possible fault causes include inadequate reductant pressure, dosing problems, NOx sensor faults or poor SCR performance. The warning alone does not identify the failed component.

Please send your registration, postcode, mileage and the exact dashboard message, including any remaining countdown distance. Include fault codes if available.

Send your postcode and let us know whether the engine currently starts. We will confirm mobile coverage, appointment availability and whether the proposed location is suitable. If the vehicle cannot restart, recovery or workshop support may be necessary.

Our Lifetime Software Warranty applies to the software work on that vehicle. If the covered software work develops a problem, we correct it again.

The 'Service' light often illuminates alongside a UREA or AdBlue warning to alert the driver to a system fault. While not immediately critical, it indicates an issue that requires attention. If left unresolved, it can lead to a non-restart countdown.

While minor crystallisation on external parts like the injector nozzle can sometimes be cleaned, internal blockages are another matter. Hardened urea crystal deposits inside the injector or the sealed tank and pump module are difficult to remove effectively. Cleaning is rarely a reliable long-term solution for pressure or dosing faults (like P20E8 or P208E) caused by such blockages.

No. We specialise in mobile software AdBlue Delete and Removal for compatible cars and vans. We do not replace tanks, pumps, heaters, injectors or NOx sensors. Send your registration and postcode and we'll confirm whether the Citroen C4 is suitable, with the price agreed before work starts.

Yes. Our normal business hours are 8 AM to 8 PM, Monday to Sunday, and we also offer a 24/7 emergency callout service across England. We confirm the price with you before a technician is sent.