AdBlue / SCR / NOx — Reprogramming Solutions

The AdBlue / SCR (Selective Catalytic Reduction) system It is the main NOx reduction technology in Euro 5 and Euro 6 diesel engines. It works by injecting a urea solution (AdBlue) into the exhaust, where it reacts with the NOx in the SCR catalyst to convert them into nitrogen and water.

It is one of the vehicle's most complex systems, comprising a fuel tank, metering pump, injector, heaters, temperature sensors, NOx sensors, and a control module (sometimes integrated into the main ECU, sometimes in a dedicated unit). Any fault in this system generates fault codes and, in many Euro 6 vehicles, a countdown timerIf the problem is not resolved, the vehicle will stop starting after a certain number of cycles.

The most frequent faults include: a defective dosing pump, an injector clogged by urea crystallization, out-of-range NOx sensors, open or short-circuited tank heaters, and AdBlue quality problems. The cost of conventional repairs is usually very high (€1,500–€3,000 in many cases).

The remapping solution completely disables SCR system management: AdBlue dosing, NOx sensor monitoring, start counter and all associated DTCs. After the intervention, the engine runs normally without logging errors. These are the AdBlue/SCR codes we solve: