Aging Check

Oxygen Sensor Aging, Oxygen Sensor After Catalyst, Checking

Special tools and equipment





- V.A.G 1551 scan tool or or 1552 scan tool with cable VAG 1551/3
- VAG 1788/10 Engine speed adjuster

Test conditions
- Coolant temperature must be at least 80°C, See display group 04, display zone 3.

Functional check
- Connect V.A.G 1551 scan tool ((VAG1552). Start engine and select "Address word" 01 of engine control module. When doing this the engine must be running at idling speed. [1][2]Reading and Clearing Diagnostic Trouble Codes

Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys 0 and 4 for the function "Introduction of basic setting" and confirm entry with Q key.

Indicated on display:

Basic setting
Input display group number XXX

- Press keys 0, 4 and 3 for "Display group number 43" and confirm entry with Q key.

Indicated on display: (1 to 4 = Display zones)

System in basic setting 43 ->
1 2 3 4

- Adjust engine speed to approx. 2300 RPM using the VAG1788/10 RPM adjuster:
- Maintain engine speed at approx. 2300 RPM until indication in display field 4 jumps from
"Test OFF" to "Test ON".
The catalytic converter temperature in display field 2 must be at least 365°C.

- Continue to maintain engine speed at approx. 2300 RPM until display field 4 indicates specified value "B1-S2 OK".

If the specifications are obtained:
- Press -> key.
- Press keys 0 and 6 for the function "End output" and confirm entry with the Q key.
- Switch off ignition.

If the specifications are not attained:
- Carry out a road test to free Oxygen sensor of possible residues and repeat the test.

Observe the valid safety precautions when carrying out a road test.

If the specifications are again not attained:
- Replace Oxygen sensor 2 -G130-.
- Check DTC memory, if necessary, repair any faults and then erase DTC memory.
Reading Diagnostic Trouble Codes
Clearing Diagnostic Trouble Codes