---

AdBlue OFF ECU Modification – Mail-In Service

Eliminate AdBlue system problems in your car—without a trip to the workshop. Simply send us your ECU , and we'll perform a complete AdBlue OFF conversion and return it to you, ready for installation.

Service dedicated to brands such as Audi, Volkswagen, Peugeot, Citroën, Renault, Opel - also with active AdBlue errors and start-up immobilizer.

---

🔧 What is the AdBlue OFF service?

After placing your order, you will receive step-by-step instructions on how to prepare your controller for shipping.
After receiving the ECU we perform:

• turning off the SCR/AdBlue system ,
• deactivation of the start-up lock countdown,
• deleting AdBlue messages and errors from the ECU memory,
• full adaptation of the controller maps to work without a dosing system.

We send the controller back the same day , ready for installation and further driving without AdBlue messages.

---

Common AdBlue faults – when is an ECU modification needed?

In Audi, VW, Peugeot, Citroën, Renault, and Opel vehicles, AdBlue failures are among the most common exhaust aftertreatment system faults. Our service center receives ECUs with errors such as:

NOx sensor errors

• P2200–P2204 – NOx sensor circuit
• P229F – NOx sensor fault
• P2A00 – out of range signal
• P204F – Incorrect NOx Reduction

AdBlue dosing errors

• P20E8 – AdBlue pressure too low
• P20E9 – pressure too high
• P2047–P2049 – AdBlue injector fault
• P2033 – injector overheating

AdBlue quality or level errors

• P207F – Incorrect fluid quality
• P20EE – SCR catalyst failure
• P203F – low AdBlue level

Temperature and level sensor errors

• P205B–P205D – AdBlue level sensor
• P206A – Fluid quality signal
• P20BD–P20BF – Temperature sensor faults

AdBlue pump errors

• P20E0–P20E2 – Pump faults
• P20C0 – mechanical seizure

SCR system errors

• P16CF – communication problems
• P2BA9 – Exceeded NOx emissions

If the message "AdBlue system failure" or "unable to start in X km" appears on the odometer or the car enters restriction mode - the AdBlue OFF modification solves the problem without the need to replace expensive components.

---

How the AdBlue system works – the most important information

AdBlue is a 32% urea solution injected into the exhaust system to reduce nitrogen oxides. The system consists of:

• tank with pump and heaters,
• fluid level, temperature and quality sensors,
• AdBlue injector,
• two NOx probes,
• SCR catalyst.

Failures of any of these components may cause errors and lead to a start immobiliser , particularly typical for Peugeot/Citroën/Opel with BlueHDi engines and the VAG group.

---

👤 Who is this service for?

• Workshops and tuners who want to quickly repair their vehicle without investing in expensive AdBlue parts.
• Car owners who experience repeated AdBlue errors, mileage countdowns or problems with sensors and pumps.
• Drivers who want to permanently eliminate SCR faults and restore full vehicle functionality.

You will receive support from us before, during and after the modification .

---

💡 Why is it worth using our service?

• Modifications based on tested solutions
• Fast turnaround – usually same day
• Safety and guaranteed operation
• Full technical support
• Secure shipping + tracking

---

❓ FAQ – frequently asked questions

Can I remove the ECU myself?
Yes, we provide clear instructions. We can assist you by phone if necessary.

How long does the entire process take?
We usually ship back the same day!

Can I restore factory settings?
Yes. We keep a copy of the original file.

Is AdBlue OFF a permanent solution to the problem?
Yes - the modification eliminates SCR system errors and prevents the lock from being re-calculated.

---

🏁 Order AdBlue OFF modification by mail order

Click "Order service" , prepare the driver according to the instructions and send it to our service.
We'll take care of the rest – quickly, safely and with a guarantee of performance.