P0314 - Single Cylinder Misfire Detected
The ECM detected a single-cylinder misfire but did not flag a specific cylinder code at the same time.
Code first. Confirm symptoms and checks before pricing parts.
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Common Next Steps
Turn the code into the next check.
Check coil boots, carbon tracking, and whether the miss follows a swap.
Inspect gap, fouling, wear, oil, coolant, and plug-well condition.
Move to injector balance, pulse, or leak-down checks if the misfire stays.
Use compression or leak-down testing when spark and fuel checks do not move the fault.
Code Overview
The ECM detected a single-cylinder misfire but did not flag a specific cylinder code at the same time.
Common Causes
- Intermittent ignition fault
- Fuel injector issue
- Mechanical problem on one cylinder
Diagnostic Steps
- Check Mode $06 or pending codes if available
- Inspect ignition and fuel components
- Watch for a cylinder-specific code to set during diagnosis
Related OBD Codes
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Next Steps
Move from code to checks, then estimate.