This 2016 Opel Insignia with a 2.0-litre engine was brought in after the engine warning light came on and the vehicle reported low pressure in the AdBlue system. The owner said the software had already been changed at another workshop, but was unaware that the system’s operation had been modified.

Diagnostics found faults related to reductant pressure, sensor performance and communication with the system control module. These records pointed to SCR/AdBlue operating issues, although the video does not provide the exact fault-code list.

The video shows the initial diagnostics and the stated plan to remove the E98 control unit, read its software and assess the earlier changes. It does not show that this work was completed, nor does it show a post-repair or post-calibration verification result.