AutoCodes – Toyota – P0351 2007 Toyota Highlander

P0351 2007 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 2007 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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,398

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0351 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 P0351 2007 Toyota Highlander - Ignition Coil 1 Primary/Secondary Circuit - AutoCodes.com — P0351 2007 Toyota Highlander Code - Ignition Coil 1 Primary/Secondary Circuit

What does this mean?

What are the Possible Causes of the DTC P0351 2007 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 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 P0351 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 P0351 2007 Toyota Highlander code?

Need more information on how to fix the P0351 2007 Toyota Highlander code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0351 2007 Toyota Highlander code diagnosed by a professional: Find a repair shop in your area

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 2007 Toyota Highlander Code

1. What are the common symptoms of OBDII code P0351 in a 2007 Toyota Highlander?

The common symptoms of code P0351 include engine misfires, rough idling, loss of power, and the Check Engine Light illuminating on the dashboard.

2. What does the OBDII code P0351 indicate on a 2007 Toyota Highlander?

Code P0351 indicates a problem with the ignition coil 1 primary/secondary circuit in the ignition system of the vehicle.

3. What are the possible causes of OBDII code P0351 on a 2007 Toyota Highlander?

Possible causes of code P0351 include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or issues with the engine control module (ECM).

4. How can I diagnose the OBDII code P0351 on my 2007 Toyota Highlander?

Diagnosing code P0351 typically involves inspecting the ignition coil and related wiring for any visible damage, checking the connectors for a secure connection, and using a multimeter to test the coil's resistance.

5. Can I still drive my 2007 Toyota Highlander with OBDII code P0351?

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

6. How can I repair OBDII code P0351 on a 2007 Toyota Highlander?

To repair code P0351, you may need to replace the faulty ignition coil, repair any damaged wiring or connectors, or reprogram the engine control module (ECM) if necessary.

7. Are there any maintenance tips to prevent OBDII code P0351 in a 2007 Toyota Highlander?

Regularly inspecting and maintaining the ignition system components, such as the ignition coils, spark plugs, and wiring, can help prevent issues like code P0351 from occurring.

8. Will resetting the Check Engine Light resolve OBDII code P0351 on a 2007 Toyota Highlander?

Resetting the Check Engine Light may temporarily turn it off, but if the underlying issue causing code P0351 is not addressed, the light is likely to come back on once the ECM detects the problem again.

9. Can a DIY enthusiast fix OBDII code P0351 in a 2007 Toyota Highlander?

While some DIY enthusiasts may have the skills to diagnose and repair code P0351, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved correctly.

10. How much does it cost to fix OBDII code P0351 on a 2007 Toyota Highlander?

The cost of fixing code P0351 can vary depending on the exact cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to get a diagnostic and repair estimate from a qualified mechanic.