How to clear faults using diagbox


Diagbox stands out as a specialized diagnostic tool predominantly for Peugeot and Citroën vehicles. Its proficiency in diagnosing and erasing vehicle faults makes it a coveted asset in automotive troubleshooting. This tutorial delves into the nuances of using Diagbox to clear vehicle faults, catering to both professional mechanics and automotive enthusiasts.

Decoding Diagbox’s Functionality

Diagbox interfaces seamlessly with a vehicle’s onboard computer systems, offering functionalities like reading and erasing error codes, real-time data monitoring, feature programming, and system firmware updates. The process of fault clearance using Diagbox involves strategic navigation through its comprehensive interface after establishing a connection with the vehicle’s diagnostic system.

Preparation for Diagbox Operation

Key prerequisites include:

  • A Diagbox-compatible laptop.
  • An OBD (On-Board Diagnostics) interface cable.
  • The target vehicle, is ideally positioned safely with the engine off and ignition switched on.

Stepwise Guide to Fault Clearance via Diagbox

  1. Interface Connection:
    • Connect the laptop to the vehicle’s OBD port using the interface cable.
    • The OBD port is typically located beneath the dashboard.
  2. Initiating Diagbox:
    • Launch Diagbox on the laptop and allow it to initialize and detect the vehicle.
  3. Vehicle Recognition:
    • Adhere to on-screen prompts for automatic or manual vehicle identification, including model and VIN recognition.
  4. Fault Code Access:
    • In Diagbox, navigate to the ‘Diagnosis’ segment.
    • Opt for the ‘Global Test’ to conduct a comprehensive scan of all electronic systems.
  5. Analyzing Fault Codes:
    • Diagbox will exhibit a detailed list of detected faults with respective codes and descriptions.
    • Thoroughly assess these codes to understand the underlying issues.
  6. Erasing Faults:
    • Proceed to the fault erasure option within Diagbox.
    • Confirm the action to erase the fault codes.
  7. Post-Clearance Evaluation:
    • Conduct a subsequent global test post-clearance to ensure all faults have been resolved.
    • Persistent faults might necessitate further diagnostic work or mechanical intervention.

Pro Tips for Optimal Diagbox Utilization

  • Code Literacy: Acquaint yourself with prevalent fault codes and their implications.
  • Software Upkeep: Regularly update Diagbox for enhanced performance and expanded capabilities.
  • Operational Safety: Always prioritize vehicular and personal safety during Diagbox operations.
  • Data Preservation: Back up essential vehicle data prior to executing major changes with Diagbox.


Harnessing the power of Diagbox for fault clearance in Peugeot and Citroën vehicles is both an art and a science. By meticulously following this guide, users can proficiently navigate Diagbox to diagnose and clear vehicle faults. Always approach automotive diagnostics with informed caution, and seek professional assistance for complex challenges. Diagbox transforms vehicle maintenance into a more streamlined and insightful process.

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