What Does P2317 Mean?
The PCM has detected an abnormal voltage or signal in the secondary (high voltage) circuit of ignition coil F. This compromises spark delivery to the corresponding cylinder.
Common Causes
45%
Failed ignition coil F with internal secondary breakdown
25%
Defective or worn spark plug on cylinder F
15%
Damaged spark plug wire or ignition boot on coil F
10%
Carbon tracking or high voltage leakage path on coil tower
5%
PCM secondary circuit monitoring failure
Diagnostic Steps
1
Step 1: Visually inspect coil F, boot, and spark plug area for cracks, carbon deposits, or oil fouling
2
Step 2: Remove spark plug F and check for proper gap, electrode wear, and deposits
3
Step 3: Test secondary resistance of coil F using a high-impedance multimeter
4
Step 4: Swap coil F with another known-good coil; if fault moves, replace coil F
5
Step 5: Verify spark plug is correct type and properly torqued to specifications
Estimated Repair Cost
$100 - $350
Parts + labor, varies by vehicle and location
The PCM has detected an abnormal voltage or signal in the secondary (high voltage) circuit of ignition coil F. This compromises spark delivery to the corresponding cylinder.
The most common cause of P2317 (Ignition Coil "F" Secondary Circuit) is: Failed ignition coil F with internal secondary breakdown
Typical repair costs for P2317 range from $100 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Engine misfire on cylinder F causes poor performance, increased emissions, and potential catalyst damage if driven extensively.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2317 to identify the root cause.
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Quick Info
Category
Powertrain
System
Ignition System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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