P2308 moderate

Ignition Coil E Primary Control Circuit Low

The P2308 code means the vehicle's onboard diagnostic system has detected: Ignition Coil E Primary Control Circuit Low. This is a moderate severity code.

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Keep driving?
Short distances only
DIY difficulty
moderate
Estimated cost
$50 - $350 (parts and labor)
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Common Symptoms

  • Engine misfire on cylinder 5
  • Check Engine Light flashing
  • Rough idle with noticeable shaking
  • Reduced engine power output
  • Exhaust smell of unburned fuel

Probable Causes (Ranked by Likelihood)

  • Failed ignition coil E Very High
  • Damaged wiring to coil E High
  • Corroded coil E connector Moderate
  • Worn spark plug on cylinder 5 Moderate

Step-by-Step Diagnostic Procedure

  1. Swap coil E with another cylinder coil to confirm the fault

  2. Inspect and replace the spark plug on cylinder 5

  3. Check coil E connector for corrosion or damage

  4. Measure coil E primary resistance

  5. Inspect wiring harness routing near exhaust for heat damage

Frequently Asked Questions

Can I drive with code P2308?

Short distances only. A flashing Check Engine Light with active misfires means you should stop driving and get the vehicle towed.

What causes P2308?

Almost always a failed ignition coil on cylinder 5. On V6 engines, rear-bank coils can be harder to access but the repair is the same.

Is P2308 expensive to fix?

Typically $50 to $350. Coil replacement is inexpensive. Labor may be higher on V6 engines where rear cylinders have limited access.

Sources

This page is built from documented references. Verify against your own service info before repair work.

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