AutoCodes – Toyota – P0352 2004 Toyota Highlander

P0352 2004 Toyota Highlander Code - Ignition Coil 2 Primary/Secondary Circuit

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 2, Ignition Coil 2 harness is open or shorted, Ignition Coil 2 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: P0352 2004 Toyota Highlander indicates Ignition Coil 2 Primary/Secondary Circuit.
Common causes: Common causes include Faulty Ignition Coil 2, Ignition Coil 2 harness is open or shorted, Ignition Coil 2 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.

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Code Popularity 5,432

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0352 2004 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 P0352 2004 Toyota Highlander - Ignition Coil 2 Primary/Secondary Circuit - AutoCodes.com — P0352 2004 Toyota Highlander Code - Ignition Coil 2 Primary/Secondary Circuit

What does this mean?

What are the Possible Causes of the DTC P0352 2004 Toyota Highlander?

Faulty Ignition Coil 2
Ignition Coil 2 harness is open or shorted
Ignition Coil 2 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0352 2004 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 P0352 2004 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 P0352 2004 Toyota Highlander code?

Need more information on how to fix the P0352 2004 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 P0352 2004 Toyota Highlander Code

1. What does the OBDII code P0352 mean for a 2004 Toyota Highlander?

P0352 indicates a malfunction in the Ignition Coil 2 Primary/Secondary Circuit, meaning the engine's computer has detected an issue with the ignition coil controlling cylinder 2.

2. What are the common symptoms of code P0352 in a 2004 Toyota Highlander?

Symptoms may include engine misfires, rough idling, reduced fuel efficiency, hesitation during acceleration, and the Check Engine Light turning on.

3. What causes the P0352 code to appear?

Common causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a failing spark plug, or a malfunctioning Engine Control Module (ECM).

4. Can I still drive my 2004 Toyota Highlander with a P0352 code?

Itâ€™s possible to drive short distances, but prolonged driving with this code can cause engine damage or catalytic converter failure due to unburned fuel entering the exhaust system.

5. How do I diagnose the P0352 code on my 2004 Toyota Highlander?

Start by inspecting the ignition coil, wiring, and connectors for damage or corrosion. Use a multimeter to test the coil's resistance and check for voltage supply. A scan tool can also help monitor live data for cylinder 2 misfires.

6. How do I fix the P0352 code on a 2004 Toyota Highlander?

Repairs often involve replacing the faulty ignition coil, repairing damaged wiring or connectors, replacing the spark plug for cylinder 2, or reprogramming/repairing the ECM if needed.

7. How much does it cost to fix code P0352 in a 2004 Toyota Highlander?

Repair costs can vary, but replacing a single ignition coil typically costs $50-$150 for parts, plus $50-$100 for labor if done by a professional.

8. Can a bad spark plug cause a P0352 code?

Yes, a worn or damaged spark plug in cylinder 2 can create excessive resistance, leading to ignition coil circuit issues and triggering the P0352 code.

9. How do I prevent the P0352 code from returning?

Regular maintenance, such as replacing spark plugs and ignition coils at recommended intervals and inspecting wiring for damage, can help prevent this issue.

10. Will clearing the P0352 code fix the problem permanently?

No, clearing the code only resets the Check Engine Light temporarily. The underlying issue in the ignition coil circuit must be diagnosed and repaired to prevent the code from returning.