A8 Quattro Sedan V8-4.2L (BVJ) (2008)
‹› Coolant Temperature at least 80 °C.
Function test
-
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:
-
End diagnosis and switch the ignition off.
If the specified values are not obtained:
Test procedure
-
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
-
Remove the rear engine cover - arrows -.
-
Remove the vacuum lines - 3 - and - 4 - from the air guide hose.
-
Disconnect the Mass Air Flow (MAF) Sensor (G70) electrical harness connector - 1 -.
-
Loosen the hose clamps - 2 - and - 5 - and remove the air guide hose.