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.
Equipment
- Data is transmitted between the control module and the VAS5051 tester via operating mode "On Board Diagnostic (OBD)".
- DTC memory is designed for permanent memory and is therefore not dependent on voltage supply.
- 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 generated 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. Meaning of exhaust Malfunction Indicator Lamp (MIL) -K83-. Refer to Exhaust Malfunction Indicator Lamp (MIL) in instrument cluster .
- EPC relevant malfunctions are also indicated by the Electronic Power Control (EPC) warning lamp in the instrument cluster.