Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSVOLKSWAGEN2002GOLF GLS, 2.0 K, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 91 (2.8L & 3.2L - GENERIC SCAN TOOL, ENGINE CODE(S): AFP, BDF, BJS [A4 PLATFORM] (28 IGNITION/GLOW PLUG SYSTEM - ST GENERIC SCAN TOOL))ST GENERIC SCAN TOOLDIAGNOSTIC MODE, SELECTINGDIAGNOSTIC MODE 3: CHECK DTC MEMORY

2002 Volkswagen Golf GLS, 2.0 K, Standard

Diagnostic mode 3: Check DTC Memory

2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION Diagnostic mode 3: Check DTC Memory

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 indicates all stored DTCs of components and systems which are emission relevant.

SAE Diagnostic Trouble Codes (DTCs)

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

Component group:
P x x x x				DTC for drivetrain
U x x x x				DTC for network communication
Norm-Code:
P 0 x x x				DTCs defined by SAE with specified malfunction texts
U 0 x x x

Norm-Code:
P 1 x x x				additional emission relevant DTCs provided by manufacturer
U 1 x x x
P 2 x x x				DTCs defined by SAE with specified malfunction texts
U 2 x x x				additional emission relevant DTCs provided by manufacturer
P 3 x x x				additional emission relevant DTCs provided by manufacturer
U 3 x x x
System group:
P x 0 x x				Fuel and air ratios and additional emission regulations
U x 0 x x				Network, electrical
P x 1 x x				Fuel and air ratios
U x 1 x x				Network, communication
P x 2 x x				Fuel and air ratios
U x 2 x x				Network, communication

System group:
P x 3 x x				Ignition system
U x 3 x x				Network, software
P x 4 x x				additional exhaust regulation
U x 4 x x				Network, data
P x 5 x x				Speed and idle control
P x 6 x x				Control module and output signals
P x 7 x x				transmission
P x 8 x x				transmission
P x 9 x x				Control modules, input and output signals

Work procedure

Connect diagnostic tester. Refer to Diagnostic tester, connecting
Start engine and let run at idle.

NOTE: Only if engine does not start:

Operate starter for approx. 6 seconds. Do not switch ignition off afterward.
Under address word 33, select "Diagnostic mode 3: Check DTC memory."

The number of stored malfunctions or "0 malfunctions detected" is displayed.

End diagnosis and switch ignition off.
Repair stored malfunctions according to DTC table:

SAE P0xxx-DTCs. Refer to SAE P0xxx-DTCs
SAE P1xxx-DTCs. Refer to SAE P1xxx-DTCs
SAE P2xxx-DTCs. Refer to SAE P2xxx-DTCs
SAE P3xxx-DTCs. Refer to SAE P3xxx-DTCs

SAE U0xxx-DTCs. Refer to SAE U0xxx-DTCs

NOTE:

The DTC table is sorted by SAE codes.
"EPC"-relevant malfunctions are also indicated by the warning lamp for Electronic Power Control ("EPC warning lamp") in the instrument cluster.
"Emission"-relevant malfunctions are additionally indicated in the instrument cluster via the exhaust Malfunction Indicator Lamp (MIL).
In Diagnostic mode 2, it can be determined at which operating condition a malfunction was detected and stored by the Engine Control Module (ECM). Refer to Diagnostic mode 2: Check operating conditions

Erase DTC memory after repairing malfunction. Refer to Diagnostic mode 4: Reset/erase diagnostic data

Display example:

P0444

Evaporative Emission System Purge Control Valve Circuit Open

Explanation:

P0444 = SAE diagnostic trouble code (malfunction identification number).
Evaporative Emission System Purge Control Valve = malfunctioning wiring path or malfunctioning component.
Circuit Open = Malfunction type as text

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.