16686high severityPowertrain
Cylinder 2 Misfire Detected
on 2005-2011 Audi A6 4.2L V8 · 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
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Other Powertrain codes on this vehicle
00532
Supply Voltage B+ Signal too Low
16394
Camshaft/Crankshaft Position Correlation Bank 1
16395
Camshaft Position Actuator Circuit/Open Bank 1
16486
Mass or Volume Air Flow Circuit Low Input
16487
Mass or Volume Air Flow Circuit High Input
16500
Engine Coolant Temperature Circuit Malfunction
16501
Engine Coolant Temperature Circuit Low Input
16502
Engine Coolant Temperature Circuit High Input
16514
O2 Sensor Circuit Bank 1 Sensor 1
16515
O2 Sensor Circuit Low Voltage Bank 1 Sensor 1