audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Heated Oxygen Sensor HO2S, Checking|Page 1108 > < Heated Oxygen Sensor HO2S, Checking|Page 1106
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‹› Coolant Temperature at least 80° C.

Test procedure

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Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check

Start diagnosis

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Connect scan tool.

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Start the engine and let it run at idle.

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Select "Diagnostic mode 6: Check test results of components that are not continuously monitored".

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Select "Test-ID 02: Oxygen sensor monitoring behind catalytic converter".

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Select following Test-IDs.

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Check the specified values at idle.

If the specified values are obtained:

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End diagnosis and switch ignition off.

If the specified values are not obtained:

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Remove the right vehicle floor cover - arrows -. Refer to the appropriate service information.

Checking primary voltage

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Disconnect the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G131) electrical harness connector - 2 -.

Heated Oxygen Sensor HO2S, Checking|Page 1108 > < Heated Oxygen Sensor HO2S, Checking|Page 1106