TorqueMech OBD Code Guide
P0363 - Misfire Detected - Fueling Disabled
The ECM disabled fuel to a cylinder after detecting a damaging misfire.
Code first. Confirm symptoms and checks before pricing parts.
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.
Related Inspection
Code Overview
The ECM disabled fuel to a cylinder after detecting a damaging misfire.
Common Causes
- Severe ignition misfire
- Injector or compression problem
- Persistent cylinder fault severe enough to threaten the catalyst
Diagnostic Steps
- Do not continue driving if the misfire is active
- Check for cylinder-specific misfire codes
- Inspect ignition, fuel, and compression on the affected cylinder
Related OBD Codes
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Next Steps
Move from code to checks, then estimate.