Related Tests, Information and Procedures

Diagnostic Trouble Code (DTC) Table

NOTE:
- If malfunctions occur in the monitored sensors and components, these are stored in the Diagnostic Trouble Code (DTC) memory together with an indication of type of malfunction.
- Malfunctions related to EPC are additionally indicated by the warning lamp for the electronic throttle control ("EPC warning lamp") which is situated in the instrument cluster. Notes on EPC system.
- Malfunctions that worsen emissions are indicated by an exhaust warning lamp (MIL) that is also located in the instrument cluster. There are malfunctions that cause the exhaust warning lamp to light up immediately after recognition.
- Malfunctions can also occur that cause the exhaust MIL to light up, but only if malfunction is recognized again after repeated engine starts. Notes for exhaust warning lamp (MIL).
- Malfunctions which cause the exhaust emission to deteriorate are displayed with an exhaust warning lamp in the instrument cluster. Notes on exhaust warning lamp.
- The malfunction table is sorted according to the 5-digit DTC on the left.
- Sporadic malfunctions (malfunction occurring from time to time) are indicated as "sporadic" on the display. The word "sporadic" signifies individually occurring, random malfunctions.
- Do not immediately replace components indicated as faulty by the VAS 5051 but: first check the wiring and connectors of these components against the wiring diagram. Also check the ground (GND) connections against wiring diagram. This is particularly relevant for DTCs recorded as "sporadic."
- If the connector is pulled off the engine control module or if the battery is disconnected, all the stored values in the control module will be erased. However, the contents of the Diagnostic Trouble Code (DTC) memory are retained. If the engine is then started, it may run rough for a short period. In this case, the engine should be run at idle for a few minutes until the adaptation process is concluded.
- After erasing the Diagnostic Trouble Code (DTC) memory, the readiness code must be regenerated. Diagnostic Trouble Code (DTC) Memory, Erasing Readiness Code