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Engine-Codes – Toyota – P0355 2002 Toyota Highlander

P0355 2002 Toyota Highlander Code - Ignition Coil 5 Primary/Secondary Circuit

Quick Answer

The P0355 diagnostic trouble code (DTC) for a 2002 Toyota Highlander indicates a problem with the Ignition Coil 5 Primary/Secondary Circuit. Common causes include Faulty ignition coil for cylinder 5, Damaged or corroded wiring connecting the ignition coil, Issues with 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
P0355 2002 Toyota Highlander indicates Ignition Coil 5 Primary/Secondary Circuit.
Common causes
Common causes include Faulty ignition coil for cylinder 5, Damaged or corroded wiring connecting the ignition coil, Issues with 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 17, 2024
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Code P0355 2002 Toyota Highlander Description

The P0355 diagnostic trouble code (DTC) for a 2002 Toyota Highlander indicates a problem with the Ignition Coil 5 Primary/Secondary Circuit. This code specifically points to an issue with the ignition coil for cylinder 5 in the engine. The ignition coil is a crucial component responsible for converting the low voltage from the battery into the high voltage needed to create a spark in the spark plugs. This spark ignites the air-fuel mixture in the combustion chamber, powering the engine.

OBDII Code P0355 2002 Toyota Highlander - Ignition Coil 5 Primary/Secondary Circuit
P0355 2002 Toyota Highlander Code - Ignition Coil 5 Primary/Secondary Circuit

Common Causes of P0355 2002 Toyota Highlander

  1. Faulty ignition coil for cylinder 5
  2. Damaged or corroded wiring connecting the ignition coil
  3. Issues with the engine control module (ECM)
  4. Poor electrical connections
  5. Environmental factors such as moisture or heat affecting the ignition coil

Symptoms of P0355 2002 Toyota Highlander

  1. Engine misfires
  2. Rough idling or shaking
  3. Decreased fuel efficiency
  4. Engine stalling
  5. Illumination of the check engine light

How to Fix P0355 2002 Toyota Highlander

  1. Begin by diagnosing the specific issue by using a scan tool to confirm the P0355 code and pinpointing the problem to cylinder 5.
  2. Inspect the ignition coil for cylinder 5 to check for any visible damage or signs of wear. Replace the ignition coil if necessary.
  3. Check the wiring harness connected to the ignition coil for any breaks, corrosion, or loose connections. Repair or replace the wiring as needed.
  4. Test the engine control module (ECM) to ensure it is functioning correctly. Replace the ECM if it is determined to be the cause of the issue.
  5. Clear the DTC with a scan tool after completing the repairs and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0355 2002 Toyota Highlander

The typical repair costs for addressing the P0355 code on a 2002 Toyota Highlander can range from $150 to $300, depending on the specific parts needed and the labor involved. This estimate includes the cost of a new ignition coil, potential wiring repairs, and diagnostic fees. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also impact the final cost. For a more accurate estimate, it's recommended to consult with local auto repair shops.

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 P0355 2002 Toyota Highlander Code

1. What does OBDII code P0355 on a 2002 Toyota Highlander mean?

The code P0355 indicates a problem with the Ignition Coil 5 Primary/Secondary Circuit.

2. What are the common symptoms of a P0355 code in a 2002 Toyota Highlander?

Common symptoms include engine misfires, rough idling, loss of power, and illuminated Check Engine Light.

3. What are the potential causes of a P0355 code in a 2002 Toyota Highlander?

Possible causes include a faulty ignition coil, damaged wiring or connectors, a defective ECM, or issues with the spark plugs.

4. How can I diagnose the issue causing a P0355 code in my 2002 Toyota Highlander?

Diagnosis typically involves checking the ignition coil, inspecting the wiring and connectors, testing the spark plugs, and scanning the ECM for related faults.

5. Can I still drive my 2002 Toyota Highlander with a P0355 code?

It is not recommended to drive with a P0355 code as it can lead to further damage to the engine and emissions system.

6. How do I repair a P0355 code in a 2002 Toyota Highlander?

Repairing a P0355 code may involve replacing the faulty ignition coil, repairing damaged wiring or connectors, or addressing any other underlying issues causing the fault.

7. Should I replace all ignition coils if I get a P0355 code on my 2002 Toyota Highlander?

While it's not necessary to replace all ignition coils, it's a good practice to inspect and potentially replace any other coils that show signs of wear or damage.

8. How much does it typically cost to repair a P0355 code in a 2002 Toyota Highlander?

The cost of repairing a P0355 code can vary depending on the underlying issue, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast fix a P0355 code in a 2002 Toyota Highlander?

If you have the necessary tools and knowledge, you may be able to diagnose and repair a P0355 code yourself, but it's recommended to consult a professional if you're unsure.

10. How often does a P0355 code occur in a 2002 Toyota Highlander?

The occurrence of a P0355 code can vary depending on the vehicle's maintenance history, driving conditions, and other factors, but it's not uncommon in older vehicles.

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