Checking misfiring recognition — AUDI
Checking misfiring recognition on Audi: factory workshop procedure for engines ALZ, ANA, AUA. Full factory text, tools and checks.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📋 Procedure
Special tools, workshop equipment, testers, measuring instruments and auxiliary items required
Fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3A
Test sequence
Connect fault reader V.A.G 1551 (V.A.G 1552). Start engine and select "Address word" 01 of engine control unit. When doing this the engine must be running at idling speed.
(Connecting fault reader and selecting engine control unit
=> Page
01-13
.)
Rapid data transfer
HELP
Select function XX
Indicated on display:
Press keys 0 and 8 for the function "Read measured value block" and confirm entry with Q key.
Read measured value block
Input display group number XXX
Indicated on display:
Press keys 0, 1 and 4 for "Display group number 14" and confirm entry with Q key.
Read measured value block 14
⇒
1
2
3
4
Indicated on display:
(1...4 = Display zones)
Check the misfire recognition status in display zone 4.
Specification: "activated"
Check total misfires in display zone 3.
Specification: 0
If the specifications are obtained:
Press ⇒key.
Press keys 0 and 6 for the "End output" function and confirm input with the Q key.
Switch off ignition.
If the specifications are not attained:
Change to display group 15 as follows:
V.A.G 1551: Press key 3
V.A.G 1552: Press key ↑
Read measured value block 15
⇒
1
2
3
4
Indicated on display:
(1...4 = Display zones)
Check the misfire recognition status in display zone 4.
Specification: "activated"
Check misfiring of Cyl. 1...Cyl. 3 in display zones 1...3.
Specification: 0
If the specifications are not attained:
Press ⇒key.
Press keys 0 and 6 for the "End output" function and confirm input with the Q key.
Switch off ignition.
=>Page
01-120
, Evaluating display group 15 and display group 16.
If the specifications are obtained:
Change to display group 16 as follows:
V.A.G 1551: Press key 3
V.A.G 1552: Press key ↑
Read measured value block 16
⇒
1
4
Indicated on display:
(1 and 4 = Display zones)
Check misfire recognition status in display zone 4.
Specification: "activated"
Check misfiring of Cyl. 4 in display zone 1
Specification: 0
Press ⇒key.
Press keys 0 and 6 for the "End output" function and confirm input with the Q key.
Switch off ignition.
If the specification is not attained:
=>Page
01-120
, Evaluating display group 15 and display group 16.
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.