A4 Quattro Wagon L4-2.0L Turbo (BPG) (2005)
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Catalytic Converter: Testing and Inspection
Three Way Catalytic Converter (TWC), Checking
Function test
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Connect the diagnostic tester.
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Start 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 33 ($21): Catalytic converter monitoring".
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Select Test-ID 132 ($84).
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Check specified values at idle.
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End diagnosis and switch ignition off.
If specified values are exceeded:
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Replace front exhaust pipe with catalytic converter.
Assembly is performed in the reverse order of removal, note the following:
Final procedures
After repair work, the following work steps must be performed in the mentioned sequence:
1. Check the DTC memory.
2. If necessary, erase the DTC memory.
3. If the DTC memory was erased, generate readiness code.
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End diagnosis and switch ignition off.
