Diagnostic mode 4: Reset/erase diagnostic data

2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION Diagnostic mode 4: Reset/erase diagnostic data
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen R32, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, and 2003 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Function 

This diagnostic mode performs the following functions:

  • all emission relevant malfunctions in DTC memory will be erased,
  • the operating conditions at which a malfunction was stored will be reset. Refer to Diagnostic mode 2: Check operating conditions 
  • all adaptation values will be reset,
  • all test results of the diagnostic functions will be reset.

Requirement 

Work procedure 

  • Connect diagnostic tester. Refer to Diagnostic tester, connecting 
  • Start engine and let run at idle.
  • Under address word 33, select "Diagnostic mode 4: Reset/erase diagnostic data.

Erased or reset:

  • Number and content of the DTC memories,
  • Operating conditions,
  • Adaptation values,
  • Test results.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.