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Home >> Audi >> 2007 >> S6 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> 5.2L - Generic Scan Tool - On Board Diagnostic (OBD) - Engine Code: BXA >> 01 On Board Diagnostic (OBD) >> Diagnosis And Testing >> Three Way Catalytic Converter, Checking

Three Way Catalytic Converter, Checking

Function test 

-- Perform the function tests located in Diagnostic Mode 06. Refer to the following table:

Function Test Refer to
33 ($21): Catalyst Monitor Bank 1 DIAGNOSTIC MODE 06 - READ TEST RESULTS FOR SPECIFIC DIAGNOSTIC FUNCTIONS
34 ($22): Catalyst Monitor Bank 2 DIAGNOSTIC MODE 06 - READ TEST RESULTS FOR SPECIFIC DIAGNOSTIC FUNCTIONS
35 ($23): Catalyst Monitor Bank 3 DIAGNOSTIC MODE 06 - READ TEST RESULTS FOR SPECIFIC DIAGNOSTIC FUNCTIONS
($24): Catalyst Monitor Bank 4 DIAGNOSTIC MODE 06 - READ TEST RESULTS FOR SPECIFIC DIAGNOSTIC FUNCTIONS

If specified values are obtained:

-- End diagnosis and switch the ignition off.

If the specified values are exceeded:

-- Replace the faulty catalytic converter with front exhaust pipe. See item 17 under Exhaust System Assembly Overview . .

Final procedures 

After repair work, the following work steps must be performed in the following sequence:

  1. Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
  2. If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
  3. If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .

-- End of diagnosis.