AutoCodes – Toyota – P0356 2007 Toyota Highlander

P0356 2007 Toyota Highlander Code - Ignition Coil 6 Primary/Secondary Circuit

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 6, Ignition Coil 6 harness is open or shorted, Ignition Coil 6 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
P0356 2007 Toyota Highlander indicates Ignition Coil 6 Primary/Secondary Circuit.
Common causes
Common causes include Faulty Ignition Coil 6, Ignition Coil 6 harness is open or shorted, Ignition Coil 6 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 4,896
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0356 2007 Toyota Highlander Description

The ignition system on the vehicle uses individual ignition coils for each cylinder. The Engine Control Module (ECM) controls each ignition coil operation. The ECM sends a ON/OFF signal to energize the ignition coil to create a spark at the spark plug when a spark is required at the cylinder.
OBDII Code P0356 2007 Toyota Highlander - Ignition Coil 6 Primary/Secondary Circuit - AutoCodes.com
P0356 2007 Toyota Highlander Code - Ignition Coil 6 Primary/Secondary Circuit

What are the Possible Causes of the DTC P0356 2007 Toyota Highlander?

  • Faulty Ignition Coil 6
  • Ignition Coil 6 harness is open or shorted
  • Ignition Coil 6 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0356 2007 Toyota Highlander?

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 P0356 2007 Toyota Highlander 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.

Need more information about the P0356 2007 Toyota Highlander code?

Need more information on how to fix the P0356 2007 Toyota Highlander code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0356 2007 Toyota Highlander Code

1. What does OBDII code P0356 on a 2007 Toyota Highlander mean?

- This code indicates a problem with the Ignition Coil 6 Primary/Secondary Circuit.

2. What are the common symptoms of a P0356 code in a 2007 Toyota Highlander?

- Common symptoms include engine misfires, rough idling, poor acceleration, and potentially a decrease in fuel efficiency.

3. What are the possible causes of the P0356 code in a 2007 Toyota Highlander?

- Possible causes include a faulty ignition coil, wiring issues in the ignition coil circuit, a damaged spark plug, or a problem with the engine control module.

4. How can I diagnose the source of the P0356 code in my 2007 Toyota Highlander?

- To pinpoint the issue, you can use a scan tool to check for additional trouble codes, visually inspect the ignition coil and wiring, perform resistance tests on the coil, and test the spark plug.

5. How do I repair a P0356 code in a 2007 Toyota Highlander?

- Repair options include replacing the faulty ignition coil, repairing any damaged wiring, replacing the spark plug, or addressing any issues with the engine control module.

6. Can I still drive my 2007 Toyota Highlander with a P0356 code?

- It is not recommended to drive your vehicle with a P0356 code as it can lead to further damage and potentially unsafe driving conditions.

7. How much does it typically cost to repair a P0356 code in a 2007 Toyota Highlander?

- The cost of repair can vary depending on the specific issue causing the code, but it can range from $100 to $300 for parts and labor.

8. Will resetting the OBDII system clear the P0356 code in my 2007 Toyota Highlander?

- While resetting the system may temporarily clear the code, it's important to diagnose and repair the underlying issue to prevent the code from reappearing.

9. Can a DIY enthusiast fix a P0356 code in a 2007 Toyota Highlander?

- Depending on your skill level and access to tools, you may be able to address the issue yourself by following repair guides and videos, but professional help is recommended for complex repairs.

10. How often does the Ignition Coil 6 Primary/Secondary Circuit issue occur in 2007 Toyota Highlanders?

- This issue can occur sporadically and is not extremely common, but it is important to address promptly to avoid further engine damage.

Discuss the causes and fixes for P0356 2007 Toyota Highlander OBDII Code

  • P0356 for toyota prado 2007

  • The ignition coil #6 is the most likely cause of the problem. Try swapping the ignition coil with another cylinder and check if the code follows the coil.

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