Related Tests, Information and Procedures

NOTE:
- If malfunctions occur in monitored sensors or components, these will be stored as DTCs in the DTC memory with a description of malfunction type.
- "E - Gas" - relevant malfunctions are also indicated by the MIL for electric accelerator mechanism ("EPC warning lamp").
- Malfunctions that worsen emissions are also indicated by an Malfunction Indicator Lamp (MIL) (MIL for output DTM) that is also located in the instrument cluster There are malfunctions that cause the Malfunction Indicator Lamp (MIL) to light up immediately after recognition. There are also malfunctions for which the Malfunction Indicator Lamp (MIL) does not light up until repeated recognition at engine start.
- Malfunctions that occur only sporadically (temporary malfunctions) are are identified by the letters "SP" (sporadic malfunction) on the VAG 1551 scan tool display. The word sporadic means "appearing or occurring at irregular intervals, occasional."
- The DTC table is organized by the 5 digit code at left.
- If a stored DTC does not reoccur within the next 40 warm-up cycles, the DTC will be erased automatically.
- Do not immediately replace components that the VAG 1551 suggests are malfunctioning, instead: check wire connections and harness connectors to these components according to wiring diagram. Also check Ground (GND) connections according to wiring diagram. This is particularly valid when malfunctions are displayed as "sporadically occurring" (SP).
- If the connector from the ECM is disconnected or the battery is disconnected, all adaptation values in the control module are erased. DTC memory content will remain intact however. If the engine is started after this, a rough, uneven idle can result. In this case, engine must be allowed to run at idle for a few minutes until adaptation procedure has been completed.
- After DTC memory is erased readiness code must be re - generated.