On Board Diagnostic (OBD) Technical data
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
Features
- Data transfer between control module and vehicle diagnostic, testing and information system VAS 5051 is carried out in "self-diagnosis" mode.
- Diagnostic Trouble Code (DTC) memory: Non-volatile and volatile memories.
- Display of stored DTCs occurs after initiation of display mode. Refer to Diagnostic Trouble Code (DTC) memory, checking .
- DTC memory must be erased after malfunction is repaired. Refer to Diagnostic Trouble Code (DTC) memory, erasing .
Important
- Readiness code must be re-generated after every time DTC memory is erased. Refer to Readiness code, generating .
- If the ECM recognizes malfunctions that lead to a worsening of emissions values, it indicates them by lighting the Malfunction Indicator Lamp (MIL) -K83- in the instrument cluster. Significance of Malfunction Indicator Lamp (MIL) -K83-. Refer to Malfunction Indicator Lamp (MIL) -K83- in instrument cluster .
- Electronic Power Control (EPC) relevant malfunctions are also indicated in the instrument cluster by the warning lamp for Electronic Power Control (EPC warning lamp).