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Engine-Codes – Toyota – P0352 2007 Toyota Highlander

P0352 2007 Toyota Highlander Code - Ignition Coil 2 Primary/Secondary Circuit

Quick Answer

The diagnostic trouble code P0352 in a 2007 Toyota Highlander indicates a problem with the ignition coil 2 primary/secondary circuit. Common causes include Faulty ignition coil, Damaged or corroded wiring/connectors in the ignition coil circuit, Issues with the ignition coil driver within the Engine Control Module (ECM). 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
P0352 2007 Toyota Highlander indicates Ignition Coil 2 Primary/Secondary Circuit.
Common causes
Common causes include Faulty ignition coil, Damaged or corroded wiring/connectors in the ignition coil circuit, Issues with the ignition coil driver within the Engine Control Module (ECM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 05, 2024
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Code P0352 2007 Toyota Highlander Description

The diagnostic trouble code P0352 in a 2007 Toyota Highlander indicates a problem with the ignition coil 2 primary/secondary circuit. The ignition coil is a crucial component of the ignition system, responsible for converting the low voltage from the battery into the high voltage needed to ignite the air-fuel mixture in the engine cylinders. In this case, the code specifically points to an issue with the circuitry associated with the second ignition coil. This can result in misfires, poor engine performance, and potential damage to the catalytic converter over time.

OBDII Code P0352 2007 Toyota Highlander - Ignition Coil 2 Primary/Secondary Circuit
P0352 2007 Toyota Highlander Code - Ignition Coil 2 Primary/Secondary Circuit

Common Causes of P0352 2007 Toyota Highlander

  1. Faulty ignition coil
  2. Damaged or corroded wiring/connectors in the ignition coil circuit
  3. Issues with the ignition coil driver within the Engine Control Module (ECM)
  4. Electrical interference or short circuits in the ignition system
  5. Environmental factors such as water intrusion or heat damage

Symptoms of P0352 2007 Toyota Highlander

  1. Engine misfires or hesitation during acceleration
  2. Rough idling or stalling
  3. Decreased fuel efficiency
  4. Illumination of the check engine light
  5. Engine may not start in severe cases

How to Fix P0352 2007 Toyota Highlander

  1. Begin by diagnosing the specific cause of the issue using an OBD-II scanner and performing a visual inspection of the ignition coil and associated wiring.
  2. If the ignition coil is found to be faulty, it will need to be replaced with a new, high-quality unit.
  3. Check and repair any damaged wiring or connectors in the ignition coil circuit.
  4. Reset the ECM and clear the diagnostic trouble codes to see if the issue has been resolved.
  5. Test drive the vehicle to ensure that the problem has been successfully addressed and that the engine is running smoothly.

Cost to Fix P0352 2007 Toyota Highlander

The cost of repairing the ignition coil 2 primary/secondary circuit issue in a 2007 Toyota Highlander can vary depending on the specific cause of the problem and the cost of parts and labor in your area. On average, the cost of replacing an ignition coil ranges from $100 to $250, with additional costs for diagnostic testing and labor. Overall, the total repair cost could range from $150 to $400 or more, depending on the extent of the issue and the shop's rates. It's recommended to obtain quotes from multiple auto repair shops to find the best price for the necessary repairs.

When is the Code Detected?

Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a valid pulse signal from the ignition coil.

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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 P0352 2007 Toyota Highlander Code

1. What are the common symptoms of OBDII code P0352 on a 2007 Toyota Highlander?

- Common symptoms include engine misfires, rough idling, lack of power, and illuminated check engine light.

2. What does the OBDII code P0352 for a 2007 Toyota Highlander indicate?

- This code indicates a problem in the ignition coil 2 primary/secondary circuit.

3. What are the possible causes of OBDII code P0352 on a 2007 Toyota Highlander?

- Possible causes include a faulty ignition coil, wiring issues in the ignition coil circuit, or a problem with the Engine Control Module (ECM).

4. How can I diagnose the issue causing OBDII code P0352 on my 2007 Toyota Highlander?

- You can start by checking the ignition coil 2 for any signs of damage, inspecting the wiring for any breaks or shorts, and testing the ECM for proper functionality.

5. Can I continue driving my 2007 Toyota Highlander with OBDII code P0352 active?

- It is not recommended to drive with this code active, as it can lead to further damage to the engine and catalytic converter.

6. Is it possible to repair OBDII code P0352 on a 2007 Toyota Highlander myself?

- If you have the necessary tools and knowledge, you may be able to replace the faulty ignition coil or repair wiring issues yourself. Otherwise, it's best to seek professional help.

7. How much does it cost to fix OBDII code P0352 on a 2007 Toyota Highlander?

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

8. Are there any preventive measures to avoid OBDII code P0352 on a 2007 Toyota Highlander?

- Regular maintenance, such as checking and replacing ignition coils as needed, can help prevent this code from occurring.

9. Can a faulty spark plug cause OBDII code P0352 on a 2007 Toyota Highlander?

- While a faulty spark plug can contribute to ignition coil issues, it is not a direct cause of OBDII code P0352.

10. Will resetting the check engine light clear OBDII code P0352 from a 2007 Toyota Highlander?

- Resetting the check engine light may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to return.

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