audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Oxygen Sensor Heaters After Catalytic Converter, Checking|Page 7057 > < Oxygen Sensor Heaters After Catalytic Converter, Checking|Page 7055
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‹› Coolant Temperature at least 80 °C.

Function test

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Perform the function test located in diagnostic mode 06. Refer to => [ OBDMID 05 ($05): Oxygen Sensor

Monitor Bank 2 - Sensor 1 ] .

If specified values are obtained:

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End diagnosis and switch the ignition off.

If the specified values are not obtained:

Test procedure

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

Start diagnosis

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Remove the rear engine cover - arrows -.

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Remove the vacuum lines - 3 - and - 4 - from the air guide hose.

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Disconnect the Mass Air Flow (MAF) Sensor (G70) electrical harness connector - 1 -.

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Loosen the hose clamps - 2 - and - 5 - and remove the air guide hose.

Oxygen Sensor Heaters After Catalytic Converter, Checking|Page 7057 > < Oxygen Sensor Heaters After Catalytic Converter, Checking|Page 7055