Audi TSB #A011649 2041120-
2011 Audi S4
Affected Component: ELECTRICAL SYSTEM: SOFTWARE
- The MIL is on due to DTC P042000 and/or P043000 (Catalyst system Bank 1/2, Efficiency below threshold) being stored in the engine control module (ECM), J623 (address word 01). The diagnostic limitations were too narrow. New ECM software implemented to correct the condition.