16686high severityPowertrain
Cylinder 2 Misfire Detected
on 2017 Audi S5 3.0L Supercharged V6 · AWD
What this code means
The ECU detects a misfire in cylinder 2 (equivalent to OBD P0302). This is usually an ignition, fuel, or compression issue on that cylinder.
Symptoms
- Engine shakes or runs rough
- Flashing check engine light
- Loss of power
Common causes
- Faulty spark plug on cylinder 2
- Faulty ignition coil on cylinder 2
- Clogged or leaking injector
- Low compression
Diagnostic steps
- Confirm misfire on cylinder 2
- Swap coil and plug to another cylinder
- Test injector operation
- Perform compression test
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