Engine Control Systems

Diagnostic Trouble Code (DTC) Table

NOTE:
- If malfunctions occur in the sensors and components being monitored, they will be stored in the DTC memory together with an indication of the type of fault.
- Malfunctions relating to the electronic throttle are also indicated by the EPC warning lamp in the instrument cluster (EPC = Electronic Power Control); notes on electronic throttle system. Electronic Throttle Warning Lamp In Instrument Cluster
- Malfunctions which lead to an increase in exhaust emissions are indicated by the Malfunction Indicator Lamp (MIL), which is also located in the instrument cluster. There are malfunctions which lead to switching on of the Malfunction Indicator Lamp (MIL) immediately after recognition. Other malfunctions can also occur, on which the Malfunction Indicator Lamp (MIL) is only switched on if the malfunction is recognized again after the engine is re-started. Notes for Malfunction Indicator Lamp. Malfunction Indicator Lamp (MIL) -K83- In Instrument Cluster
- The DTC table is arranged according to the 5-digit DTCs in the left-hand column.
- If a malfunction is stored in the DTC memory and then does not occur again during the next 40 engine warm-up phases, the DTC will be automatically erased.
- Sporadically occurring malfunctions (temporary or intermittent malfunctions) will be indicated on the display with the word "sporadic".
- Components that are indicated as being faulty by VAS 5051 should not be replaced immediately. Always start by checking the wiring, connectors and Ground connections for the component using the current flow diagram. This is particularly important in the case of faults which are shown as "sporadic".
- If the connector for the engine control module is unplugged or if the battery is disconnected, all the learned values stored in the control module will be erased, although the contents of the DTC memory will remain intact. The next time the engine is started the idling may be rough at first, in which case it should be left to idle for a few minutes until the learning process has been completed.
- After erasing DTC memory, Diagnostic Mode 04 - Erase DTC Memory it is necessary to generate readiness code again. Generate Readiness Code