RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
Specified value: 2.5 to 10.0 ohms (at approx. 20° C)
If the specification was not obtained:
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Replace Heated Oxygen Sensor (HO2S) 2 (G108). Refer to Fuel Injection and Ignition Repair Information.
If the specification was obtained:
Checking voltage supply
Crank the engine.
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Using a multimeter, check the Heated Oxygen Sensor (HO2S) 2 (G108) electrical harness connector terminal 4 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 electrical harness connector for damage, corrosion, lose or broken terminals.
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Check the wiring from the Heated Oxygen Sensor (HO2S) 2 (G108) electrical harness connector terminal 4 to the Engine Component Power
Supply Relay (J757) socket 2/87 for a short circuit to each other, Ground (GND), or an open circuit.