P2317 Code: Ignition Coil “F” Secondary Circuit

The ignition system has coils that turn low electrical voltage from your car’s battery into the high voltage needed by the spark plugs. The vehicle’s computer will log a P2317 code if the powertrain control module (PCM) has identified a malfunction in the secondary control circuit of the ignition coil labeled “F.”

What Does the P2317 Code Mean?

Diagnostic trouble code (DTC) P2317 stands for “Ignition Coil ‘F’ Secondary Circuit.” You can check your vehicle’s repair manual to find where secondary circuit ‘F’ is located. This generic powertrain code can apply to many modern vehicles with OBD-II.

The ignition coil has a primary and secondary winding. The primary winding changes electrical energy from the battery to magnetic energy. As the ignition control module opens the ground circuit, the magnetic field collapses and generates a high voltage in the secondary winding. This high voltage is what allows the spark plug to ignite the air-fuel mixture inside the cylinder.

Efficient spark plug operation is necessary to operate an internal combustion engine. A stored P2317 code can indicate multiple issues with your vehicle, so you’ll need to get it worked out right away to prevent further problems.

You may also watch this video to understand how ignition coil works:

Note: The definition of code P2317 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P2317 Code?

• Faulty spark plug wire (if equipped)
• Defective relay or blown fuse
• Open or shorted wiring
• Bad ignition coil
• An issue with the PCM

What are the Common Symptoms of the P2317 Code?

• Illuminated check engine light
• Engine misfiring
• Diminished engine performance
• Bad fuel economy

How to Diagnose the P2317 Code

When it comes to diagnosing a P2317 code, you first have to review your vehicle’s repair manual to learn about your vehicle’s components. Some diagnostic steps can vary depending on your vehicle’s make and model. For example, the diagnostic process for a P2317 code in a Dodge Ram 1500 might be different for that in a Ford F-150.

If you don’t have the required skills or knowledge, you should leave the job to a professional. They can save you from the hassle of diagnosing and repairing your vehicle.

How to Fix the P2317 Code

There’s no cookie-cutter solution for troubleshooting DTC 2317. You must find the underlying causes of this code to determine the appropriate fix. Good thing there are plenty of OBD-II resources online that can help you diagnose and repair your vehicle. While Chilton repair manuals are certainly useful for identifying part names and such, we highly recommend ALLDATA’s single-vehicle subscription service for DIYers who are looking for comprehensive factory repair information.