P0363Generic code

P0363 Code: Misfire Detected - Fueling Disabled

The P0363 code means the computer detected severe misfires and cut off the fuel injection to the affected cylinder to protect the catalytic converter. It is stored along with a P030X misfire code that names the cylinder. The engine keeps running on one cylinder fewer until the cause is repaired.

Severity
High
Can I keep driving?
Yes, but with caution
Estimated cost
$20 to $600
Difficulty
Medium
System
Ignition and Misfires
Applies to
All OBD2 vehicles

Updated Reviewed by Renzo Chacca

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What the P0363 code means

When a cylinder misfires continuously, the unburned fuel reaches the catalytic converter and overheats it. To prevent that, some computers disable the injector of that cylinder and store the P0363 code together with the matching misfire code.

The engine will run with one cylinder fewer, with vibration and less power, until the cause of the misfire is repaired and the codes are cleared.

P0363 code symptoms

  • Engine shaking clearly.
  • Loss of power.
  • Check engine light on.
  • P030X codes present.

Likely causes of the P0363 code

  1. Ignition coil or spark plug on the cylinder named by the P030X code.
  2. Fuel injector.
  3. Low compression.

How to diagnose the P0363 code step by step

  1. Read the associated P030X code to learn which cylinder it is.
  2. Apply the misfire diagnosis: swap the coil and the spark plug, then check the injector and the compression.

How to fix the P0363 code

  • Repair the cause of the misfire.
  • Clear the codes to reactivate the injector.

Technical reference data

  • The computer reactivates the injector when the codes are cleared or after several drive cycles without misfires.
  • These are approximate values. Check the manufacturer data for your engine.

Brand-specific notes

P0363 on Nissan

Nissan is one of the manufacturers that mainly uses this strategy of cutting fuel to a misfiring cylinder.

P0363 on Infiniti

Infiniti is one of the manufacturers that mainly uses this strategy of cutting fuel to a misfiring cylinder.

Frequently asked questions about P0363

Why does the computer shut off a cylinder?
So the unburned fuel does not destroy the catalytic converter. Cutting the injector is cheaper than replacing the converter.
Can I drive with a P0363 code?
Only when you have to with a P0363 code. The engine runs rough on one cylinder fewer, and the real problem, the misfire, needs to be repaired soon.
Which code should I look at?
The P0301 to P0312 code that comes with it. It tells you which cylinder is misfiring.
How much does it cost to fix P0363?
Between $20 and $600, depending on whether the cause is a spark plug, a coil, an injector or low compression.
What does the P0363 code mean?
It is a generic OBD2 code that means a misfire was detected and fueling to that cylinder was disabled.
Will a P0363 code clear itself?
Not until the misfire is repaired. The computer reactivates the injector when the codes are cleared or after several drive cycles without misfires, and if the cause is still there the code returns.

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Questions about the P0363 code

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