S5 Quattro Coupe V8-4.2L (CAUA) (2009)
Specified value: 1.0 to 20.0 ohms (at approx. 20° C)
If the specification was not obtained:
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Replace the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130).
If the specification was obtained:
Checking voltage supply
Crank the engine.
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Using a multimeter, check the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) electrical harness connector terminal
1 to Ground (GND) for voltage.
Specified value: Battery voltage.
Switch the ignition off.
If the specification was not obtained:
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Check the wiring from the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) electrical harness connector terminal 1 to
the Engine Component Power Supply Relay (J757) socket 2/87 for an open circuit, a short circuit to Battery (+), or Ground (GND).