A6 Quattro Sedan V8-4.2L (BVJ) (2007)
Specified value: 0.400 to 0.500 Volts
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Switch the ignition off.
If the specified value was obtained:
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Replace the Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131).
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 => [ Engine Control Module, Removing and Installing ] See: Engine
Control Module/Service and Repair/Engine Control Module.
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Using a Multimeter, check the Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131) electrical harness connector
terminals to the Motronic Engine Control Module (ECM) (J623) electrical harness connector T94a terminals for an open circuit.