TorqueMech OBD Code Guide
P0313 - Misfire Detected With Low Fuel
The ECM detected a misfire while fuel level was low enough to affect pickup or fuel delivery.
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Read code pattern
Check likely system
Estimate after confirmation
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Common Next Steps
Turn the code into the next check.
Inspect ignition coils
Check coil boots, carbon tracking, and whether the miss follows a swap.
Check spark plugs
Inspect gap, fouling, wear, oil, coolant, and plug-well condition.
Verify injector operation
Move to injector balance, pulse, or leak-down checks if the misfire stays.
Check compression if needed
Use compression or leak-down testing when spark and fuel checks do not move the fault.
Code Overview
The ECM detected a misfire while fuel level was low enough to affect pickup or fuel delivery.
Common Causes
- Low fuel level
- Fuel pickup problem
- Weak fuel pump under low-tank conditions
Diagnostic Steps
- Confirm the fuel level
- Check for fuel delivery issues
- Inspect for additional cylinder-specific misfire codes
Related OBD Codes
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Next Steps
Move from code to checks, then estimate.