What are the common causes of P0363?

A hard misfire that cut fuel to protect the catalyst. A failing spark plug or coil on the offending cylinder. A stuck or clogged fuel injector. Low fuel pressure starving the injectors. A mechanical fault such as low compression.

Scan all stored and pending misfire codes to find the cylinder. Inspect spark plugs and coils on the affected cylinders. Test fuel pressure and injector operation. Run a compression test on the misfiring cylinders. Repair the misfire cause before clearing. Clear the code and retest.

P0363

Misfire Detected - Fueling Disabled

System: Ignition and misfire (P code)
Lamp: Check Engine Light
Category: Powertrain - Ignition

What it means

P0363 means Misfire Detected - Fueling Disabled.

Check these first

A hard misfire that cut fuel to protect the catalyst
A failing spark plug or coil on the offending cylinder
A stuck or clogged fuel injector
Low fuel pressure starving the injectors
A mechanical fault such as low compression

What to do next

Scan all stored and pending misfire codes to find the cylinder
Inspect spark plugs and coils on the affected cylinders
Test fuel pressure and injector operation
Run a compression test on the misfiring cylinders
Repair the misfire cause before clearing
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.