Leon Mk2
| Selectable functions when using fault reader -V.A.G. 1551/1552- or unit -VAS 5051- |
| The following table contains a summary of the conditions in which the desired functions can be selected: |
| Function | Premise | |||
| Functions of fault reader -V.A.G. 1551-, -V.A.G. 1552- or -VAS 5051- | Engine off, ignition on | Engine idling | Vehicle moving | |
| 01 | Consult control unit version | yes | yes | yes |
| 02 | Consult fault memory | yes → Note | yes | yes |
| 03 | Final control diagnosis | yes | no | no |
| 04 | Basic settings → Note | yes | no | no |
| 05 | Clear fault memory | yes | yes | yes |
| 06 | End transmission | yes | yes | yes |
| 08 | Read measured value block | yes | yes | yes |
| 1) | Do so if the engine does not start. The ignition must be on. |
| 2) | Do so after replacing the control unit, the throttle valve control unit or the engine and after disconnecting the battery. |
