P2323 Fault Code

Ignition Coil H Secondary Circuit

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

The Ignition Coil H Secondary Circuit fault code (P2323) indicates that there is an issue with the secondary circuit of the ignition coil designated as 'H'. This circuit is responsible for transferring the electrical energy from the ignition coil to the spark plug, which is crucial for engine performance. If this circuit is not functioning properly, the engine may misfire, leading to poor fuel efficiency and increased emissions.

What are the symptoms of the P2323 code?

Symptoms associated with the P2323 fault code may include:

• Engine misfires or rough idling
• Decreased engine performance and acceleration
• Engine stalling or failing to start
• Check Engine Light (CEL) illuminating on the dashboard
• Increased emissions and potential failed emissions test

What causes the P2323 code?

Common causes of the P2323 fault code include:

• Faulty ignition coil
• Damaged wiring or connectors in the secondary circuit
• Short circuits or open circuits in the ignition system
• Issues with the vehicle's Engine Control Module (ECM)
• Faulty spark plugs that can affect the ignition coil operation

How to fix P2323?

To resolve the P2323 fault code, consider the following steps:

• Inspect the ignition coil 'H' and test for proper operation; replace if necessary.
• Check the wiring and connectors related to the secondary circuit for any signs of damage or corrosion and repair as needed.
• Test the spark plugs and replace them if they are worn or faulty.
• Scan the vehicle's ECM for other related fault codes that could help identify underlying issues.
• Clear the fault code from the ECM and take the vehicle for a test drive to ensure the issue is resolved.