Ignition Coil E Primary Control Circuit Low
What does P2308 mean?
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.
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
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Swap coil E with another cylinder coil to confirm the fault
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Inspect and replace the spark plug on cylinder 5
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Check coil E connector for corrosion or damage
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Measure coil E primary resistance
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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.