New Beetle GLS L4-1.8L Turbo (AWV) (2001)
Possible causes of malfunction if sensor control frequency is too slow:
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Slots or holes in sensor body are blocked
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Sensor vent hole in area of connecting wire is blocked
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Sensor has been overheated (glazed)
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Sensor has been damaged by leaded fuel
Checking Oxygen Sensor wiring for oxygen sensor 1
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Remove inner plenum chamber cover, left.
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Connect VAG 1598/31 test box to control module wiring harness. Motronic Engine Control Module (ECM) -J220- is not connected by this action.