DPF fault and diagnostics

This VAG vehicle had a DPF warning light, reduced power and an engine fault. Its mileage was approximately 240,000 km. The workshop carried out diagnostics and identified an issue related to the particulate filter.

The option chosen by the customer

The technicians explained the option of replacing the filter and checking engine systems, including the injectors and turbocharger, first. The customer chose a lower-cost option involving DPF removal and ECU software changes. The PCR2.1 control unit file was read and a version with DPF and EGR operation disabled in software was prepared.

Writing the software

The video shows the prepared file being written to the ECU and the engine being started afterwards. The DPF limp mode was no longer active after programming, and the workshop reported that the related faults were no longer present. The video does not confirm a separate post-work emissions test or an inspection result. The possibility of restoring the original software and repairing the system later was also discussed.