This software can read/write DTC Fault memories in all ECUs simultaneously for Volkswagen, Audi, Seat, and Skoda vehicles via OBDII.
Starting in 2005, the CAN gateway has been compatible with VAG vehicles.
Any ELM327 Bluetooth OBD adapter from a third party can be used for this.

Except for a few models:
i.e. 2009 models of the Skoda Fabia, VW Polo, and VW Lupo

Bluetooth adapter compatible with ELM327 must be used.
Connect ELM327 to the car's OBDII port.
Run applications on your smartphone.
All errors in all electronic systems will be removed after a brief delay.

Some defects (such as internal ECU faults) cannot be fixed, and the control module may expressly decline. Be cautious that erasing error codes will not solve the underlying issue.