Checking misfiring recognition function: Audi 4.2 (BCY, BRV)
Step-by-step checking misfiring recognition function for the Audi 4.2 (BCY/BRV): factory workshop text.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📐 4 workshop diagrams for BCY
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
BRV
Test sequence
Connect up vehicle diagnostic, testing and information system VAS 5051=>Page
01-7
and select vehicle system "01 - Engine electronics" from list. Engine must be idling.
Indicated on VAS 5051:
From list -1- select diagnostic function "08 - Reading measured value block".
Indicated on VAS 5051:
1 -
Enter display group
Use keypad -2- to enter "014" for "Display group number 014" and confirm by touching Q key.
Indicated on VAS 5051:
Check display in zones -3- and -4-.
Display zones
1 · 2 · 3 · 4
Display group 014: Misfiring recognition
Display · xxx rpm · xxx % · xxx · ---
Significance · Engine speed · Load · Total misfiring · Misfiring recognition
Operating range · Activated / Disabled
Specification · xxxx rpm · 12...26 % · 0 · Activated
Note · If reading exceeds specification: Check misfiring of individual cylinders => Page 28-52 · If operation is likely to induce misfiring (e.g. warm-up, overrun shut-off), misfiring recognition function is disabled
If reading matches specification:
Terminate function "08 - Reading measured value block" by touching ◂ key.
If reading does not match specification:
Touch s key to switch to display group 015.
Checking misfiring recognition of individual cylinders
Indicated on VAS 5051:
Check display in zones -1- to -4-.
Display zones
1 · 2 · 3 · 4
Display group 015: Misfiring recognition for cylinders 1, 2 and 3
Display · xxx · xxx · xxx · ---
Significance · Cylinder 1 misfiring · Cylinder 2 misfiring · Cylinder 3 misfiring · Misfiring recognition
Operating range · Activated / Disabled
Specification · 0 · 0 · 0 · Activated
Note · If reading exceeds specification: Evaluation => Page 28-55 · ---
Touch s key to switch to display group 016.
Indicated on VAS 5051:
Check display in zones -1- to -4-.
Display zones
1 · 2 · 3 · 4
Display group 016: Misfiring recognition for cylinders 4, 5 and 6
Display · xxx · xxx · xxx · ---
Significance · Cylinder 4 misfiring · Cylinder 5 misfiring · Cylinder 6 misfiring · Misfiring recognition
Operating range · Activated / Disabled
Specification · 0 · 0 · 0 · Activated
Note · If reading exceeds specification: Evaluation => Page 28-55 · ---
Touch s key to switch to display group 017.
Indicated on VAS 5051:
Check display in zones -1- to -4-.
Display zones
1 · 2 · 3 · 4
Display group 017: Misfiring recognition for cylinders 7 and 8
Display · xxx · xxx · ---
Significance · Cylinder 7 misfiring · Cylinder 8 misfiring · Misfiring recognition
Operating range · Activated / Disabled
Specification · 0 · 0 · Activated
Note · If reading exceeds specification: Evaluation => Page 28-55 · ---
Terminate function "08 - Reading measured value block" by touching ◂ key.
Evaluation of display groups 014, 015, 016 and 017:
Cylinder / misfiring- / rate · Possible cause of trouble · Fault remedy
Greater than 0 · - Fuel level too low · - Check fuel level and fill tank if necessary
- Spark plug defective / - Ignition coil/output stage defective · - Check ignition coils with output stages => Page 28-4
- Injector defective · - Check injectors / => Page 24-66
- Fuel pressure too low · - Check fuel system pressure / => Page 24-59
- Crankcase breather leaking · - Check crankcase breather hoses for firm fit and leaks
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.