P2318 Fault Code

Ignition Coil G Primary Control Circuit Low

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

The P2318 fault code indicates that there is a problem with the Ignition Coil G primary control circuit, which has been detected as having a low voltage or resistance issue. This can affect the ability of the ignition coil to create a spark sufficient to ignite the fuel-air mixture in the engine, potentially leading to performance issues.

What are the symptoms of the P2318 code?

Symptoms that may accompany the P2318 code include:

• Engine misfire or rough idle
• Decreased engine performance and acceleration
• Illuminated check engine light
• Difficulty starting the engine
• Increased fuel consumption.

What causes the P2318 code?

The most common causes of the P2318 code include:

• Faulty ignition coil G
• Poor wiring connections or damaged wiring leading to the ignition coil
• Faulty engine control module (ECM)
• Incorrectly adjusted or installed ignition components
• Other related sensors or components malfunctioning.

How to fix P2318?

To resolve the P2318 fault code, you can follow these steps:

• Inspect the ignition coil G for any visible damage or wear, and replace it if necessary.
• Check the wiring and connectors related to ignition coil G for corrosion, breaks, or loose connections.
• Test the voltage and resistance levels in the primary control circuit to ensure they meet specifications.
• If the ignition coil and associated wiring are in good condition, further diagnosis of the ECM may be required to rule out internal faults.