A3 Quattro V6-3.2L (BUB) (2008)
Catalytic Converter: Testing and Inspection
Three Way Catalytic Converter, Checking
Test requirements
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Battery voltage at least 12.5 volts.
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Oxygen Sensors OK.
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No leaks or damage to exhaust system.
Function test
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Perform the function test in Diagnostic Mode 06. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan
Tool Testing and Procedures/Diagnostic Mode 06 - Read Test Results For Specific Diagnostic Functions
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End diagnosis and switch the ignition off.
If the specified values are exceeded:
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Check the exhaust system for leaks.
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If necessary, repair the leak in the exhaust system.
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Erase the DTC memory. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Mode 04 - Erase DTC Memory
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Perform a road test to verify Repair.
If the DTC does not return:
Repair complete, Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes
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End diagnosis.
If no leaks are found in the exhaust system:
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Replace the catalytic converter including front exhaust pipe.
Final procedures
After repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Mode 03 - Read DTC Memory
2. If necessary, erase the DTC memory. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing
and Procedures/Diagnostic Mode 04 - Erase DTC Memory
3. If the DTC memory was erased, generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
End of diagnosis