FAPlite CitroenPeugeot OBD2 is a free Android application developed by FAP Developer. This application is designed for Peugeot and Citroen vehicles and requires an ELM327 Bluetooth or WiFi adapter to function. The app allows users to read real-time information from their Engine Management ECU, check the condition of used cars before buying, and clear faults. The application supports several INJ ECUs, gearbox ECUS, and electric power steering ECUS. The sensors are displayed in a chart or table format, and the display of sensors data is customizable. The application also allows the testing of actioners like engine fans.

It is important to note that this application will not work with bad ELM327 clone adapters that do not support extended protocol commands. The FAPlite version supports fewer parameters than the DiagBox/Lexia manufacturer diagnostic, and it can check the condition of DPF/FAP and additive level.