New Beetle GLS L4-1.8L Turbo (AWV) (2001)
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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 basic voltage for oxygen sensor 2
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Remove protective cover -arrows- and separate 4-pin connector (black/brown) -1- to Oxygen Sensor (O2S) after Three Way Catalytic Converter
(TWC) -G130-.
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Connect multimeter with auxiliary cables from VAG 1594 to measure voltage at terminals 3 + 4 (connector to Motronic control module).
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Start engine and measure basic voltage.
Specification: 0.400 to 0.500 V
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Switch off ignition.
If the specification is not obtained:
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Check oxygen sensor wiring.
If the specification is obtained:
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Replace Oxygen Sensor after Three Way Catalytic Converter (TWC) -G130-, item 8.
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Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory, Checking and Erasing DTC Memory. See: Computers
and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes
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Read readiness code. If DTC memory has been erased or Motronic Engine Control Module (ECM) -J220- was disconnected from battery positive,
readiness code must be generated again.
See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
Checking Oxygen Sensor wiring, oxygen sensor 2
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Remove inner plenum chamber cover, left.