A5 Quattro Coupe V6-3.2L (CALA) (2009)
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 Heated Oxygen Sensor (HO2S) (G108). Refer to the appropriate service information.
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 the appropriate service information.
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Using a multimeter, check the Heated Oxygen Sensor (HO2S) (G108) electrical harness connector terminals to the Motronic Engine Control
Module (ECM) (J623) electrical harness connector T94 terminals for an open circuit.