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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSVOLKSWAGEN2002GOLF GLS, 2.0 K, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 94 (2.8L - ENGINE MECHANICAL, ENGINE CODE: BDF)26 - EXHAUST SYSTEM, EMISSION CONTROLSEXHAUST SYSTEM COMPONENTS, SERVICINGCATALYTIC CONVERTER, CHECKINGTEST SEQUENCE

2002 Volkswagen Golf GLS, 2.0 K, Standard

Test sequence

2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION Test sequence

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, 2003 Volkswagen Jetta, and 2003 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.

Connect Scan Tool VAG 1551 or Vehicle system tester VAG1552/. Start engine and select "Address word" 01 of engine control module. → 01 ON BOARD DIAGNOSTIC (OBD)

Indicated on display

Rapid data transfer HELP
Select function XX

Press keys "0" and "4" for function "Initiate basic setting" and confirm entry with "Q" key.

Indicated on display

Basic setting
Input display group number XXX

Press keys "0" , "0" and "1" for "Display group number 1" and confirm entry with "Q" key.

Indicated on display: (1...4 = display zones)

System in basic setting 1 ->
1 2 3 4

Only continue with the test when:

Coolant temperature is above 85 ° C - Display zone 2 -

Change to display group 46 as follows:
Press C key.

Indicated on display

Basic setting
Input display group number XXX

Press keys "0" , "4" and "6" for "Display group number 46" and confirm entry with "Q" key.

Indicated on display: (1...4 = display zones)

System in basic setting 46 ->
1 2 3 4

Depress brake pedal and hold.
Depress accelerator down to wide open throttle position. Engine speed will be increased by engine control module to approx. 2300 rpm.

Only continue with the test when:

Catalytic converter temperature is above 380 ° C - Display zone 2 -

Hold brake pedal and accelerator down until display in display zone 4 jumps from "Test OFF" to "Test ON".

NOTE:

This process can take approx. 80 seconds.

Continue to hold brake pedal and accelerator down until display zone 4 displays specification "Cat. B1 OK.".
Release brake and accelerator pedals.

"Cat B1 OK." appears in display zone 4:

Press → key.
Press keys "0" and "6" for function "End output" and confirm entry with "Q" key.
Switch ignition off.

"CatB1 n.OK." appears in display zone 4:

Press → key.
Check DTC memory: → 01 ON BOARD DIAGNOSTIC (OBD)
Read readiness code: → 01 ON BOARD DIAGNOSTIC (OBD)
Generate readiness code again if DTC memory has been erased or engine control module disconnected from permanent positive supply: → 01 ON BOARD DIAGNOSTIC (OBD)

If no DTC is stored in DTC memory:

Press keys "0" and "6" for function "End output" and confirm entry with "Q" key.
Switch ignition off.
Replace front exhaust pipe with catalytic converter, -.

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.