Passat Wagon L4-2.0L Turbo (BPY) (2008)
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Using a multimeter, check the Heated Oxygen Sensor (HO2S) (G39) terminals 1 to 5 for voltage.
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Crank the engine.
Specified value: 0.4 to 0.5 V
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Switch the ignition off.
If the specified value is obtained:
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Replace the Heated Oxygen Sensor (HO2S) (G39).
If the specified value was not obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Motronic Engine Control Module (ECM) (J623). Refer to => [ Motronic Engine Control Module J623, Replacing ] See: Engine
Control Module/Service and Repair/Motronic Engine Control Module J623, Replacing.
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Using a Multimeter, check the Heated Oxygen Sensor (HO2S) (G39) electrical harness connector terminals to the Motronic Engine Control
Module (ECM) (J623) electrical harness connector T94 terminals for an open circuit.