Engine-CodesGeneric – P1363

P1363 Code - Ignition Coil 'D' Secondary Circuit Malfunction

Quick Answer

The P1363 diagnostic trouble code indicates an issue with the ignition coil 'D' secondary circuit in the vehicle's ignition system. Common causes include Faulty ignition coil 'D', Damaged wiring or connectors in the secondary circuit, Issues with the engine control module (ECM). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1363 indicates Ignition Coil 'D' Secondary Circuit Malfunction.
Common causes
Common causes include Faulty ignition coil 'D', Damaged wiring or connectors in the secondary circuit, Issues with the engine control module (ECM).
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P1363 Description

The P1363 diagnostic trouble code indicates an issue with the ignition coil 'D' secondary circuit in the vehicle's ignition system. The ignition coil is responsible for transforming the low voltage from the battery into the high voltage needed to create a spark in the spark plugs, which ignites the air-fuel mixture in the engine cylinders. In this case, the secondary circuit of ignition coil 'D' is malfunctioning, which can lead to misfires, rough idling, poor fuel efficiency, and even engine stalling.

OBDII Code P1363 - Ignition Coil 'D' Secondary Circuit Malfunction
P1363 Code - Ignition Coil 'D' Secondary Circuit Malfunction

Common Causes of P1363

  1. Faulty ignition coil 'D'
  2. Damaged wiring or connectors in the secondary circuit
  3. Issues with the engine control module (ECM)
  4. Corrosion or contamination in the ignition system components
  5. Electrical issues such as a blown fuse or relay affecting the ignition system

Symptoms of P1363

  1. Engine misfires
  2. Rough idling or vibrations
  3. Decreased fuel efficiency
  4. Engine stalling
  5. Loss of power or hesitation during acceleration

How to Fix P1363

  1. Diagnose the issue by using a scan tool to read the trouble code and identify the specific ignition coil 'D' that is malfunctioning.
  2. Inspect the wiring and connectors in the secondary circuit for any damage, corrosion, or loose connections.
  3. Test the ignition coil 'D' for proper resistance and continuity using a multimeter to determine if it needs to be replaced.
  4. Replace the faulty ignition coil 'D' if necessary and ensure all connections are secure.
  5. Clear the trouble code from the vehicle's ECM and test the ignition system to confirm that the issue has been resolved.

Cost to Fix P1363

The typical repair costs for addressing an ignition coil 'D' secondary circuit malfunction can range from $150 to $300, depending on the cost of the ignition coil and the labor involved in the repair. It's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check local rates for a more precise estimate.

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Code P1363 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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