Jetta GLS Wagon L4-2.0L (AZG) (2002)
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Unscrew protective cover (arrows) and disconnect 4-pin harness connector (black) -1- to Heated Oxygen Sensor (HO2S) -G39- before catalytic
converter.
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Set multimeter for resistance measurement and connect it to terminals 3 + 4 at connector for oxygen sensor. Check oxygen sensor heater for
continuity.
Specification: 2.5 to 10 Ohms (at room temperature)
If a short circuit is found in the oxygen sensor heater:
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Replace Heated Oxygen Sensor (HO2S) -G39-.
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Check DTC memory, repair any malfunctions and then erase DTC memory.
See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes
See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Clearing Diagnostic Trouble Codes
If oxygen sensor heater has continuity:
