Hyundai Kia Error Code P1305: How to Fix It

Medium 1-2 hours High Severity Verified June 2026
Error Code
P1305
Brand
Hyundai Kia
Product Type
automotive
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
1-2 hours
Error code P1305 in Hyundai and Kia vehicles indicates a problem with ignition coil #2's primary circuit. This serious issue can cause engine misfires, rough idling, and reduced performance. Immediate attention is required to prevent engine damage and restore proper operation.
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Tools You'll Need

How to Fix Error Code P1305

  1. Park safely and turn off engine

    Never work on hot engine components. Allow engine to cool completely to prevent burns.
  2. Scan for additional codes

  3. Locate ignition coil #2

    Disconnect negative battery terminal before touching electrical components.
  4. Inspect coil connector and wiring

  5. Test coil resistance

  6. Check for spark

    Keep hands and tools away from moving engine parts during cranking.
  7. Inspect spark plug #2

  8. Swap coils for testing

  9. Replace faulty components

  10. Clear codes and test

Parts You May Need

Wiring harness repair kit
Check Price on Amazon
Wiring harness repair kit
Check Price on Amazon
Wiring harness repair kit
Check Price on Amazon
Wiring harness repair kit
Check Price on Amazon
Wiring harness repair kit
Check Price on Amazon
Wiring harness repair kit
Check Price on Amazon
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When to Call a Professional

Call a professional mechanic if you find wiring harness damage, multiple cylinder misfires, or if the problem persists after replacing ignition components. Also seek professional help if you're uncomfortable working with electrical systems or lack proper diagnostic equipment.

Frequently Asked Questions

Can I drive with P1305 error code?
No, you should not drive with P1305 code. This ignition system fault can cause severe engine damage, poor fuel economy, and emission system damage. Address immediately to prevent costly repairs.
What causes ignition coil primary circuit failure?
Common causes include worn ignition coils, damaged wiring, corroded connections, faulty PCM, bad spark plugs, or oil/coolant contamination of electrical components.
How much does it cost to fix P1305 code?
Repair costs range from $50-150 for DIY spark plug/coil replacement, or $200-500 at a shop. Costs increase significantly if wiring harness repair or PCM replacement is needed.
Will P1305 cause my car to fail emissions testing?
Yes, P1305 will typically cause emissions test failure due to incomplete combustion and increased hydrocarbon emissions. The code must be resolved before passing emissions testing.
How often should ignition coils be replaced?
Ignition coils typically last 80,000-120,000 miles. Replace them when they fail or show signs of weakness. Consider replacing all coils simultaneously on high-mileage vehicles to prevent future issues.