A8 Quattro Sedan V8-4.2L (BVJ) (2008)
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Disconnect the Heated Oxygen Sensor (HO2S) 2 (G108) electrical harness connector - 3 -.
Checking primary voltage
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Using a multimeter, check the Heated Oxygen Sensor (HO2S) 2 (G108) electrical harness connector terminals 2 to 6 for voltage.
Specified value: 0.400 to 0.500 Volts
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Switch the ignition off.
If the specified value was not obtained:
