AdBlue Off - SCR System Deactivation
Software deactivation of the AdBlue / SCR system to remove DEF dependency and SCR fault limp-mode.
AdBlue (DEF) is used with the SCR system to cut NOx on Euro 5 and Euro 6 diesels. It has to be topped up regularly, and its pump, injector and sensors are known for failures that are expensive to put right.
When the AdBlue level runs low or the SCR system develops a fault, the vehicle responds by limiting power or, in some cases, refusing to start. For a working vehicle that downtime and repair cost is a real problem.
AdBlue Off deactivates the SCR and AdBlue control, the sensor readings and the power-limitation strategy in the ECU, and clears the related fault codes. The engine keeps its normal performance while the refill requirement and the failure risk are removed.
It is a common choice for commercial and high-mileage diesels where reliability and running cost matter most. Because the SCR system is emissions equipment, AdBlue Off is intended for off-road, motorsport or export use and may not be legal for road use in many countries, so the owner is responsible for checking local regulations.
Advantages & Features
- No more AdBlue refills
- Removes SCR fault limp-mode
- Avoids expensive SCR/DEF repairs
- Normal engine performance retained
- Useful for commercial and high-mileage diesels
- Fully reversible to stock
Related solutions
Price
Paid with credits from your account balance. The credit amount for your ECU is shown after the file is analysed, before you confirm. See credit packages
Frequently Asked Questions
What does AdBlue Off do?
It disables the SCR / AdBlue (DEF) system in the ECU: dosing, quality and NOx monitoring and the start-countdown or limp mode that follows an SCR fault are removed.
When is AdBlue Off used?
When the SCR system has a failed pump, heater, tank sensor or NOx sensor and the car is in a countdown or derate, or on vehicles used off-road or for export where the system is not required.
Which ECUs are supported?
Common Euro 5 and Euro 6 diesel ECUs such as Bosch EDC17, MD1 and Delphi DCM families, including separate DCU (dosing control) units. Upload the read and the analysis shows whether your ECU is supported.
Which file do I need to upload?
A full read of the engine ECU and, on some vehicles, the separate AdBlue control unit. Tell us the exact fault scenario in the note.
How long does AdBlue Off take?
Typically 10-45 minutes when a tuner has to prepare the file; database solutions are ready in minutes.
Is AdBlue Off legal?
SCR is emission equipment and disabling it is not permitted on public roads in most countries. The service is intended for off-road, motorsport and export use; the workshop is responsible for compliance.