P2314 moderate

Ignition Coil H Primary Control Circuit Low

What does P2314 mean?

The P2314 code means the vehicle's onboard diagnostic system has detected: Ignition Coil H Primary Control Circuit Low. This is a moderate severity code.

Common Symptoms

  • Misfire on cylinder 8
  • Check Engine Light flashing or steady
  • Rough running engine especially at idle
  • Reduced engine power
  • Unburned fuel odor from exhaust

Probable Causes (Ranked by Likelihood)

  • Failed ignition coil H Very High
  • Damaged wiring to coil H High
  • Corroded coil H electrical connector Moderate
  • Worn or gap-too-wide spark plug on cylinder 8 Moderate

Step-by-Step Diagnostic Procedure

  1. Swap coil H with another coil to confirm the fault

  2. Replace spark plug on cylinder 8

  3. Check coil H connector for corrosion

  4. Measure coil H primary winding resistance

  5. Inspect wiring routing for heat damage near exhaust

Frequently Asked Questions

Can I drive with code P2314?

Short distances only. Cylinder 8 misfire should be repaired quickly to prevent catalytic converter overheating.

What causes P2314?

A failed ignition coil on cylinder 8. Hemi V8 engines are particularly known for coil failures due to heat exposure.

Is P2314 expensive to fix?

Typically $50 to $350. Coil replacement is straightforward. Hemi engines benefit from replacing all 16 spark plugs (dual plug) during coil service.

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