audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Heated Oxygen Sensor 2 Before Catalytic Converter, Checking|Page 2561 > < Heated Oxygen Sensor 2 Before Catalytic Converter, Checking|Page 2559
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Disconnect the black Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) electrical harness connector-  2 -.

Checking primary voltage

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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 terminals
3 to 4 for voltage.

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) Behind Three Way Catalytic Converter (TWC) (G130). Refer to appropriate repair information.

If the specified value was not obtained:

Checking wiring

Heated Oxygen Sensor 2 Before Catalytic Converter, Checking|Page 2561 > < Heated Oxygen Sensor 2 Before Catalytic Converter, Checking|Page 2559