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Clearing Fault Memory with a Smartphone

Model: Volkswagen Golf Golf 5, MK 5, Golf V - Years: 2003, 2004, 2005, 2006, 2007, 2008
Part: Onboard computer

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Video tutorial

Among the numerous applications that can be downloaded and installed on a smartphone, many are related to the automotive world: these are programs that connect via Bluetooth to an interface that plugs into the vehicle's OBD diagnostic socket, allowing you to view and simultaneously store many engine operating parameters.

Additionally, it is also possible to read any fault codes stored by the engine management unit and clear them when possible.

Connect the interface to the OBD socket, turn on the ignition, and launch the application to read and subsequently clear the fault memory. The fault detected on the vehicle (P0171) refers to an anomaly in the fuel mixture preparation, and the cause should be investigated in the lambda sensor or the mass airflow sensor.


Updated on 15 February 2026 by ScegliAuto


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by ScegliAuto

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