What Does P2314 Mean?
The PCM detected an abnormal condition in the secondary (high voltage) circuit of ignition coil E. This affects spark delivery and combustion quality for the associated cylinder.
Common Causes
45%
Defective ignition coil E with secondary winding breakdown
25%
Worn or fouled spark plug on cylinder E
15%
Damaged spark plug wire or boot allowing voltage leakage
10%
Carbon tracking on coil tower or spark plug insulator
5%
PCM monitoring circuit malfunction
Diagnostic Steps
1
Step 1: Inspect coil E, boot, and spark plug wire for cracks, carbon tracks, or oil contamination
2
Step 2: Remove and inspect spark plug E for excessive gap, erosion, or fouling
3
Step 3: Measure secondary resistance of coil E (typically 6,000-15,000 ohms depending on design)
4
Step 4: Swap coil E with another cylinder and retest; if code follows coil, replace it
5
Step 5: Check for proper spark plug gap and torque specifications
Estimated Repair Cost
$100 - $350
Parts + labor, varies by vehicle and location
The PCM detected an abnormal condition in the secondary (high voltage) circuit of ignition coil E. This affects spark delivery and combustion quality for the associated cylinder.
The most common cause of P2314 (Ignition Coil "E" Secondary Circuit) is: Defective ignition coil E with secondary winding breakdown
Typical repair costs for P2314 range from $100 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Misfiring cylinder E will cause rough idle, power loss, and increased emissions. Prolonged operation may damage the catalytic converter.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2314 to identify the root cause.
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Quick Info
Category
Powertrain
System
Ignition System
Difficulty
Type
Generic (SAE)
Recommended Tools
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