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Home >> Volkswagen >> 2001 >> Jetta GL, 2.0 B >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (Maintenance (A3 Platform)) >> Description of work >> Diagnostic Trouble Code (DTC) Memory, checking with VAG 1551 Scan Tool (ST) >> Checking DTC Memory:

Checking DTC Memory:

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VAG 1551 displays all known address words in sequence.

If the control module answers with its identification, the number of stored Diagnostic Trouble Codes (DTCs) will be indicated or "No DTC recognized" will be displayed.

If one or more DTCs are stored, the stored Diagnostic Trouble Codes (DTCs) will be displayed and printed out in sequence. Following this, VAG 1551 displays the next address word.

If DTCs are stored, a repair is necessary.

The diagnostic report should be attached to the repair order.

NOTE: VAG 1551 Scan Tool (ST) must remain connected for the emission and idling test.