Clearing Diagnostic Trouble Codes

DIAGNOSTIC TROUBLE CODE MEMORY
(VAG 1551 function 02)

^ Both Checking and Erasing procedures for the DTC memory are in this article.

^ When Diagnostic Trouble Code (DTC) Memory has been selected via the Scan Tool, all stored trouble codes will be displayed on the scan tool.

^ The DTC's are used with the Diagnostic Trouble Code Charts.

^ The DTC Charts contain:

DTC Codes
Conditions
Symptoms
Corrective Measures

^ DTC's are displayed one at a time or can all be printed out at once.

Note: If a printout of the DTC's is desired:

- Switch on the printer using the print button, lamp in print button lights

- When the printer is switched ON stored malfunctions are automatically printed out in sequence.

^ The DTC memory cannot be erased until it has been Checked.

PROCEDURES TO CHECK MEMORY

- Connect the VAG 1551, Refer to Connecting and Operating VAG 1551 Scan Tool Connecting and Operating VAG 1551 Scan Tool

- After the display appears as shown:

Rapid data transfer HELP
Select function XX

- Select function code.

Diagnostic Trouble Code Memory 02

- Display will appear as shown:

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02 - Check DTC Memory

- Press Q button to enter input.

- Display will appear as shown:

No DTC recognized

OR

X DTC recognized

- Indicating the number of stored malfunctions or "No DTC recognized" will be displayed.

- When the printer is switched ON stored malfunctions are automatically printed out in sequence.

- Use the "ARROW" button to display the stored codes, one at a time.

- Repair any malfunctions as necessary using the DTC Charts or component test procedures.

PROCEDURES TO ERASE MEMORY

- After DTC memory has been checked leave ignition ON

- Press the "arrow" button.

- Display will appear as shown:

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Select function XX

- Select function code.

Erase DTC Memory 05

- Display will appear as shown:

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05 - Erase DTC Memory

- Press Q button to enter input.

- If memory is successfully erased the display will appear as shown:

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DTC Memory is Erased

- If Display appears as shown:

Caution DTC Memory was not checked

- The DTC Memory was not completely checked or the ignition was shut off before erasing the memory.

- Press the "ARROW" button.

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Select function XX

Note: After repairs it maybe necessary to erase the memory due to faults store while connecting and disconnecting components.

- Test drive vehicle for 5min. or more.

- Check & Erase DTC memory.