With Manufacturer's Scan Tool

Misfire Recognition, Checking

Special tools and equipment
VAG1551 Scan Tool (ST) or VAG1552 mobile scan tool with VAG1551/3 adapter cable

Test procedure
- Connect VAG1551 Scan Tool (ST) or VAG1552 mobile scan tool. Start engine and press buttons -0- and -1- to select "Engine Electronics" address word 01 (when doing this engine must be running at idling speed). Refer to "On Board Diagnostic (OBD)/Diagnostic Trouble Code (DTC) Memory, Checking and Erasing (Scan Tool Functions 02 and 05)" under "Fuel Delivery and Air Induction/Fuel Injector", Testing and Inspection


Indicated on display


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -8- to select "Read Measuring Value Block" function 08, and press -0- button to confirm input.

Indicated on display


Read Measuring Value Block
Input display group number XXX


- Press buttons -0-, -1- and -4- to input display group number 14 (014) and press -Q- button to confirm input.

Indicated on display: (1-4 = display fields)


Read Measuring Value Block 14 ->
1 2 3 4


- Check total number of misfires in display field 3.
- Check misfire recognition status in display field 4.

Disply Group 014 : Ignition, Misfire Recognition:

If the specifications are obtained:
- Press -> button.
- Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
- Switch ignition off.

If the specified values are not attained:
- Change to display group 15 as follows:
- Press button -3- (VAG1551) or button up arrow (VAG1552).

Indicated on display: (1-4 = display fields)


Read Measuring Value Block 15 ->
1 2 3 4


- Check misfiring in display fields 1-3.
- Check misfire recognition status in display field 4.

Disply Group 015 : Ignition, Misfire Recognition:

If the specifications are obtained:
- Change to display group 16 as follows:
- Press button -3- (VAG1551) or button up arrow (VAG1552).

Indicated on display: (1 and 4 = display fields)


Read Measuring Value Block 16 ->
1 4

- Check misfiring in display field 1.
- Check misfire recognition status in display field 4.

Disply Group 016 : Misfire Recognition:

- Press -> button.
- Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
- Switch ignition off.

Evaluating display group 14, display field 3: total number of Three Way Catalytic Converter (TWC) damaging misfires







Evaluating display groups 15 and 16, display fields 1-3: total number of Three Way Catalytic Converter (TWC) damaging misfires Cyl.1 - Cyl.6