P0308
Cylinder 8 Misfire Detected
Description
Cylinder 8 Misfire Detected. This powertrain diagnostic trouble code covers the engine, the fuel and ignition systems, emission control and the transmission.
OBD Codes Details
Possible Causes
Worn spark plugs, failed ignition coil, faulty injector, low compression in a cylinder
Solution
Read misfire counters per cylinder, inspect plugs and coils, swap the coil and injector to a neighbouring cylinder, run a compression test
Symptoms
- Engine performance issues
- Reduced power or acceleration
- Poor fuel economy
- Engine running rough
Diagnostic Recommendations
- Scan for additional powertrain codes
- Check engine performance parameters
- Inspect fuel and ignition systems
- Test sensors and actuators
Repair Cost Estimate
- Basic diagnostic: $100-200
- Sensor replacement: $100-500
- System repair: $200-1500
- Major engine work: $1000-5000
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Fact-checking completed
Verified by:
Pavel Volkov
Created:
Information verified against official sources
Official Sources
Society of Automotive Engineers
Official OBD-II diagnostic trouble codes standard (SAE J2012)
Automotive engineering standards organization
International Organization for Standardization
International standard for vehicle diagnostic systems
International standards for automotive diagnostics
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