Reading Diagnostic Trouble Codes

DTC Memory, Checking (Function 02) And Erasing (Function 05)

- Connect VAS5051 tester or VAG1551 scan tool and select control module for engine electronics using "address word" 01. Engine should run at idle.


NOTE: If engine doesn't start, crank engine using starter for at least 5 seconds. Do not switch ignition off afterward under any circumstance.


When indicated on display


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -2- to select "Check DTC memory" and press -Q- button to confirm input.

When indicated on display


No malfunction recognized


- Press -> button.

or

When indicated on display


X malfunctions recognized!


When printer is switched on, stored DTCs are shown in sequence and printed.
- Find printed DTCs in DTC table and repair. Testing and Inspection


NOTE:
- If there are no DTCs in DTC memory, DTC memory should not be unnecessarily erased or else readiness code will be lost.
- If DTC memory was erased, readiness code must be re-generated Readiness Code, Generating


- Press -> button.

When indicated on display


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -5-to select "Erase DTC memory" and press -Q- button to confirm input.


NOTE:
When indicated on display


WARNING!
DTC memory was not checked


Procedure was not followed exactly.
- Check DTC memory.

DTC memory will not be erased under the following conditions:
- Ignition switched off after DTC memory was checked.
- A static malfunction was not repaired.

When indicated on display


Rapid data transfer ->
DTC Memory is erased!


- Press -> button.
- Check DTC memory again after repair work and erase it if necessary.


NOTE: This causes DTCs to be erased that were stored during repair of malfunction, e.g. because harness connectors were disconnected.


- If DTC memory was erased, readiness code must be re-generated Readiness Code, Generating