Diagnostic Mode 2: Check Operating Conditions

2003 Volkswagen Passat Sedan (3B3) L4-1.8L Turbo (AWM)SECTION Diagnostic Mode 2: Check Operating Conditions


Diagnostic Mode 2: Check Operating Conditions

Function

This diagnostic mode displays the operating conditions at which an emission relevant malfunction was detected and stored by the Engine Control Module (ECM).

Work procedure
- Connect diagnostic tester. Diagnostic Tester, Connecting
- Depending on the desired operating condition: switch on ignition or start engine and let run at idle.
- Under address word 33, select "Diagnostic mode 2: Check operating conditions."
- Select the desired operating condition "PID XX".

NOTE:
- The following list only serves as an overview.
- The operating conditions are sorted by the PID (parameter-identifications).







If DTCs are displayed in "PID 02":
- Repair stored malfunctions according to DTC table: P Code Charts
- SAE P0xxx-DTCs.
- SAE P1xxx-DTCs.
- SAE P2xxx-DTCs.
- SAE P3xxx-DTCs.
- SAE U0xxx-DTCs.

- End diagnosis and switch ignition off.

NOTE:
- The DTC table is sorted by SAE code.
- "Emission"-relevant malfunctions are additionally indicated in the instrument cluster via the Malfunction Indicator Lamp (MIL)
- Erase DTC memory after repairing malfunction. Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
RENDER: 1.0x

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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.