AutoCodes – Toyota – P0351 2005 Toyota Highlander

P0351 2005 Toyota Highlander Code - Ignition Coil 1 Primary/Secondary Circuit

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 1, Ignition Coil 1 harness is open or shorted, Ignition Coil 1 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: P0351 2005 Toyota Highlander indicates Ignition Coil 1 Primary/Secondary Circuit.
Common causes: Common causes include Faulty Ignition Coil 1, Ignition Coil 1 harness is open or shorted, Ignition Coil 1 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 4,787

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
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0351 2005 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 P0351 2005 Toyota Highlander - Ignition Coil 1 Primary/Secondary Circuit - AutoCodes.com — P0351 2005 Toyota Highlander Code - Ignition Coil 1 Primary/Secondary Circuit

What does this mean?

What are the Possible Causes of the DTC P0351 2005 Toyota Highlander?

Faulty Ignition Coil 1
Ignition Coil 1 harness is open or shorted
Ignition Coil 1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0351 2005 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 P0351 2005 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 P0351 2005 Toyota Highlander code?

Need more information on how to fix the P0351 2005 Toyota Highlander code? Get Access to Factory Service Manuals

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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 P0351 2005 Toyota Highlander Code

1. What does OBDII code P0351 for a 2005 Toyota Highlander mean?

The code P0351 indicates a problem in the Ignition Coil 1 Primary/Secondary Circuit of the vehicle.

2. What are common symptoms of OBDII code P0351 in a 2005 Toyota Highlander?

Common symptoms of P0351 may include engine misfires, rough idling, lack of power, and illuminated check engine light.

3. What are the possible causes of OBDII code P0351 in a 2005 Toyota Highlander?

Possible causes of P0351 include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or a problem with the Engine Control Module (ECM).

4. How can I diagnose the issue related to OBDII code P0351 in a 2005 Toyota Highlander?

Diagnosing the problem involves inspecting the ignition coil, checking the wiring and connectors for any damage, and using a scan tool to analyze data and confirm the fault.

5. Can I still drive my 2005 Toyota Highlander with OBDII code P0351?

It is not recommended to drive the vehicle with code P0351 as it can lead to further damage to the engine and other components. It is best to address the issue promptly.

6. How can I repair OBDII code P0351 in my 2005 Toyota Highlander?

Repairing P0351 usually involves replacing the faulty ignition coil, repairing any damaged wiring or connectors, and clearing the code with a scan tool.

7. Are there any tips to prevent OBDII code P0351 from occurring in my 2005 Toyota Highlander?

Regular maintenance of the ignition system, such as replacing spark plugs and ignition coils at recommended intervals, can help prevent issues like P0351 from occurring.

8. Can a DIY enthusiast fix OBDII code P0351 in a 2005 Toyota Highlander?

While some DIY enthusiasts may have the skills to replace an ignition coil or check wiring connections, it is recommended to seek professional help for an accurate diagnosis and repair.

9. How much does it typically cost to repair OBDII code P0351 in a 2005 Toyota Highlander?

The cost of repairing P0351 can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Will resetting the check engine light resolve OBDII code P0351 in a 2005 Toyota Highlander?

Resetting the check engine light without addressing the underlying issue will not fix P0351. It is essential to diagnose and repair the root cause of the problem to prevent it from reoccurring.