AutoCodesHyundai – P1318 Hyundai

P1318 Hyundai Code - Ignition Coil 3 Low Output

Quick Answer

P1318 Hyundai indicates Ignition Coil 3 Low Output. Common causes include Faulty Ignition Coil, Ignition Coil harness is open or shorted, Ignition Coil circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1318 Hyundai indicates Ignition Coil 3 Low Output.
Common causes
Common causes include Faulty Ignition Coil, Ignition Coil harness is open or shorted, Ignition Coil circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,505
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 09, 2019
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Code P1318 Hyundai Description

OBDII Code P1318 Hyundai - Ignition Coil 3 Low Output - AutoCodes.com
P1318 Hyundai Code - Ignition Coil 3 Low Output

What are the Possible Causes of the DTC P1318 Hyundai?

  • Faulty Ignition Coil
  • Ignition Coil harness is open or shorted
  • Ignition Coil circuit poor electrical connection

How to Fix the DTC P1318 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1318 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1318 Hyundai Code

1. What does the OBDII code P1318 mean on a Hyundai?

The P1318 code indicates "Ignition Coil 3 Low Output," meaning the third ignition coil is not delivering the expected voltage or spark.

2. What are the symptoms of the P1318 code in a Hyundai?

Symptoms may include engine misfires, rough idling, reduced power, poor fuel efficiency, and possible hesitation during acceleration.

3. What causes the P1318 code on a Hyundai?

Common causes include a faulty ignition coil, damaged wiring or connectors, a failing spark plug, or an issue with the engine control module (ECM).

4. Can I drive my Hyundai with the P1318 code active?

Driving with this code is not recommended, as it can lead to further engine damage, reduced performance, and increased emissions.

5. How do I diagnose the P1318 code on my Hyundai?

Diagnose it by inspecting ignition coil 3, checking for damaged wiring, testing the coil's resistance, and verifying spark plug condition.

6. How do I fix the P1318 code on a Hyundai?

Repairs may include replacing ignition coil 3, repairing damaged wiring, replacing spark plugs, or addressing ECM issues if necessary.

7. How much does it cost to fix the P1318 code on a Hyundai?

Repair costs vary but typically range from $100 to $300, depending on whether the ignition coil, spark plugs, or wiring needs replacement.

8. Could a bad spark plug cause the P1318 code?

Yes, a worn or damaged spark plug can cause low output from the ignition coil, triggering the P1318 code.

9. Will clearing the P1318 code fix the problem?

Clearing the code will remove it temporarily, but if the underlying issue isn’t resolved, the code will return.

10. How can I prevent the P1318 code from occurring again?

Perform regular maintenance, including replacing spark plugs and ignition coils as needed, and inspect wiring for damage.

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