Aging Check

Oxygen Sensor Aging (Oxygen Sensor Before Catalytic Converter), Checking

Special Tools and Equipment







- VAG1788/10 RPM adjuster







- VAS5051 with VAG5051/1
or
- VAG1551 with VAG1551/3B

Test Requirement:
- Coolant temperature at least 80 °C See Display group 4, display field 3

Test Sequence
- Connect VAS5051 tester or VAG1551 scan tool and select the control module for engine electronics using "address word" 01. Refer to "Scan Tool Testing/Scan Tool Connecting And Initial Checks", Testing and Inspection

Engine must run at idle for this.

When indicated on display:


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -4- to select "Initiate basic setting" and press -Q- button to confirm input.

When indicated on display:


Basic Setting Q
Input display group number XXX


- Press buttons -0-, -3- and -4- to select "display group number 034" and press -Q- button to confirm input.

When indicated on display:


System in Basic Setting 34 ->
1 2 3 4


- Use VAG1788/10 RPM adjuster to adjust engine speed to between 1000 and 2400 RPM.
- Check specified value in display field 4 after indication "Test ON" appears:


NOTE: This process can take a few minutes.







- Press -C- button.

When indicated on display:


Basic Setting Q
Input display group number XXX


- Press buttons -0-, -3- and -5- to select "display group number 035" and press -Q- button to confirm input.

When indicated on display:


System in Basic Setting 35 ->
1 2 3 4


- Check specified value in display field 4.


NOTE: The test in display group 035 is activated simultaneously with the test in display group 034. Therefore the test result is indicated immediately after display group 035 is selected.