| The engine control unit is equipped with a fault memory. The fault memory is designed as a permanent memory. |
| If malfunctions occur in the monitored sensors or components, they are stored in the fault memory with indication of the fault type. |
| Faults that only occur temporarily (sporadically) are displayed with the suffix “/SP”. Possible causes of sporadic faults are e.g. a loose contact or a temporary line interruption. If a sporadic fault no longer occurs after 40 engine starts, it is erased from the fault memory. |
| The stored faults can be read out with the vehicle system tester -V.A.G 1552- using programme card 5.0 and higher version or fault reader -V.A.G 1551 - using programme card 8.0 and higher version or vehicle system tester - VAS 5051- → Chapter. |
| After the fault(s) has(have) been removed the fault memory must be erased → Chapter. |
Note | The following description only relates to the vehicle system tester -V.A.G 1552-. |
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