Doosan DX180 downgrade mode: solution to AdBlue SCR failure

Doosan DX180 degraded mode is a common problem in public works. It is often caused by a fault in the AdBlue system (SCR). As soon as a fault occurs, the machine can lose power. This can bring work on the site to a complete standstill. To avoid this type of inconvenience, there is a solution: removing the AdBlue system and emission devices. The result is a reliable machine with no loss of power.

Reprogramming the Adem IV ECU, which controls the Perkins 1204F engine, optimizes engine parameters. This intervention improves both performance and reliability in the field.

Doosan DX180 degraded mode fault diagnostics

Before any intervention, it is essential to carry out a complete diagnosis of the pollution control system. This enables us to pinpoint the cause of any malfunctions. Errors often reappear, even after several parts have been replaced. In this context, disabling the systems at the origin of the degraded mode often becomes the most logical solution.

During analysis of a Doosan DX180 equipped with the Adem IV ECU, several faults were detected. Here are the main ones:

• E005246-15 - Aftertreatment SCR Operator Inducement Severity: High - least severe (1)
  This code indicates a fault of high severity, although minimal. It may be due to a faulty NOx sensor or poor quality AdBlue. This leads to a loss of power and entry into degraded mode.

• E005246-16 - Aftertreatment SCR Operator Inducement Severity: High
  This code indicates a persistent problem in the SCR system. A clogged line or damaged catalyst may be the cause. This fault can lead to excessive fuel consumption and unexpected stops.

• E004364-18 - SCR Catalyst Conversion Efficiency
  Here, the warning concerns a low conversion efficiency of pollutant gases. This may be due to an ageing catalyst or AdBlue contamination. This problem increases emissions and accentuates the risk of going into degraded mode.

Reprogramming process to remove the Doosan DX180 degraded mode

The process begins with electronic diagnostics using tools such as CAT ET or Perkins EST. These tools identify faults linked to the Doosan DX180 degraded mode, directly on the Perkins 1204F engine.

Next, the engine file is read from the ECU (Adem IV). This file contains all operating parameters. It is then analyzed to locate AdBlue, DPF and EGR functions. At this stage, engineers identify the causes of the downgraded mode.

Once the causes have been identified, software modifications are applied. These enable the AdBlue system to be deactivated, the DPF to be emulated and the errors triggering power loss to be eliminated. Checksums are recalculated to guarantee file integrity.

Finally, the modified file is injected into the ECU. A series of tests is carried out on site to validate performance. This method ensures definitive elimination of the Doosan DX180 degraded mode, with a fully operational engine.

Find out more about Doosan and emissions deactivation

Visit our section dedicated to the Doosan range to discover all our AdBlue, DPF and EGR suppression solutions, compatible with many models of excavators, loaders and other construction machinery.
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Do you also work on Perkins engines (404F, 854F, 1204F, etc.) or Adem IV ECUs?
Access our page dedicated to interventions on Perkins engines to find out more about reprogramming, diagnostics and emissions suppression possibilities.
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