P0363 Code - Misfire Detected Fueling Disabled

What Does P0363 Mean?

Is the fuel pump sometimes not priming when you turn the key to ON(II)? Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. The mechanical timing is also something that you should check, as we mentioned above. When you see P0363 engine fault code on your engine code reader this description will help you.

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What are the common causes of P0363 ?

Ignition system component failure is the most common cause when this code is stored in the PCM. Ignition system components, including spark plugs, plug wires and boots, and ignition coils are most often the culprit but beware of other causes, as well. These include lean conditions caused by insufficient fuel pressure, excessive engine vacuum leak/s, EGR system malfunction, clogged catalytic converter/s, or faulty fuel injectors.

How do you troubleshoot P0363 ?

After diagnosing the P0363 code by scanning with an OBD-II scanner, performing an inspection of electrical components, and clearing the code to perform a retest, a mechanic has a few potential repairs to address the issue. These may include:

• Performing necessary tune-ups on ignition system components, including checking for faulty spark plugs, boots, ignition coils, distributor caps, and fuel filters.
• Moving coils, spark plugs, and other components to a cylinder that is operating properly, in order to assess which parts may be faulty.
• Checking the oxygen sensor data to determine if there is a vacuum leak, and repairing a broken, disconnected, or cracked vacuum hose if necessary.
• Inspecting and unclogging the catalytic converter.
• Repairing or replacing any faulty fuel injectors.

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