P0363 Fault Code

Misfire Detected - Fueling Disabled

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0363 code indicates that the vehicle's engine control module (ECM) has detected a misfire in one or more cylinders. When a misfire is detected, the ECM may disable fueling for the affected cylinder to prevent further damage to the engine. This can lead to a rough idle, poor acceleration, and increased emissions. It's essential to address this issue promptly to maintain engine performance and efficiency.

What are the symptoms of the P0363 code?

Common symptoms associated with a P0363 code include:

• Rough engine idle
• Reduced engine power and acceleration
• Increased fuel consumption
• Engine hesitation during acceleration
• Check engine light illuminated on the dashboard

What causes the P0363 code?

Several factors can lead to a misfire, including:

• Faulty spark plugs or ignition coils
• Fuel delivery issues (e.g., clogged fuel injectors)
• Vacuum leaks affecting air-fuel mixture
• Engine compression problems
• Faulty sensors (e.g., camshaft or crankshaft position sensors)

How to fix P0363?

To resolve a P0363 fault code, consider the following steps:

• Inspect and replace faulty spark plugs or ignition coils
• Check fuel injectors for clogs or malfunctions and clean or replace them as necessary
• Test for vacuum leaks and repair any identified issues
• Measure engine compression and address any low compression cylinders
• Examine and test camshaft and crankshaft position sensors for proper operation