SAE Diagnostic Trouble Codes (DTCs)

2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION SAE Diagnostic Trouble Codes (DTCs)
WARNING: This page is about a different variant/trim than selected.

The DTC always consists of a 5-digit alpha - numeric value with the following meaning:

Component group:

  • Pxxxx = DTC for drivetrain.

Norm-Code:

  • P0xxx = DTCs defined by SAE with specified malfunction texts.

System group:

  • Px0xx = Fuel and air ratio and additional emission regulations
  • Px1xx = Fuel and air ratio.
  • Px2xx = Fuel and air ratio.
  • Px3xx = Ignition system.
  • Px4xx = additional emission regulation.
  • Px5xx = Speed and idle control.
  • Px6xx = Control module and output signals.
  • Px7xx = Transmission.
  • Px8xx = Transmission.
  • Px9xx = Control modules, input and output signals.
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When to See a Mechanic

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

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