volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Oxygen Sensor Heater For Oxygen Sensors Before Catalytic Converter, Checking|Page 6221 > < Oxygen Sensor Heater For Oxygen Sensors Before Catalytic Converter, Checking|Page 6219
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Check wires for short circuit to B+ or Ground (GND).

Specified value: infinite ohms

If no malfunctions are found in wires:

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Replace the respective oxygen sensor:

‹› Heated Oxygen Sensor (HO2S) (G39) bank  1 ,

‹› Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter  (TWC) (G108).

Final Procedures

After the repair work, the following work steps must be performed  in the following sequence:

1. Check the DTC memory.  Refer to --> [ Diagnostic Mode 03 - Read DTC Memory ] See: Testing and Inspection/Scan Tool Testing and

Procedures/Diagnostic Modes 01 - 09. 

2. If necessary, erase the DTC memory.  Refer to --> [ Diagnostic Mode 04 - Erase DTC Memory ] See: Testing and Inspection/Scan Tool Testing

and Procedures/Diagnostic Modes 01 - 09.

3. If the DTC memory was erased, generate readiness code. Refer to --> [ Readiness Code ] See: Testing and Inspection/Monitors, Trips, Drive

Cycles and Readiness Codes.

Oxygen Sensor Heater For Oxygen Sensors Before Catalytic Converter, Checking|Page 6221 > < Oxygen Sensor Heater For Oxygen Sensors Before Catalytic Converter, Checking|Page 6219