P0351 2006 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 2006 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.
Code P0351 2006 Toyota Highlander Description
What are the Possible Causes of the DTC P0351 2006 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 2006 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 2006 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 2006 Toyota Highlander code?
Need more information on how to fix the P0351 2006 Toyota Highlander code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P0351 2006 Toyota Highlander Code
1. What does the OBDII code P0351 mean for a 2006 Toyota Highlander?
P0351 indicates a malfunction in the Ignition Coil 1 Primary/Secondary Circuit, meaning the engine control module (ECM) detected an issue with the coil’s operation.
2. What are the symptoms of code P0351 in a 2006 Toyota Highlander?
Common symptoms include engine misfires, poor acceleration, rough idling, reduced fuel efficiency, and the check engine light turning on.
3. What causes the P0351 code on a 2006 Toyota Highlander?
Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a defective ECM, or spark plug issues.
4. Can I drive my 2006 Toyota Highlander with the P0351 code?
It’s not recommended to drive for extended periods with this code, as it can lead to further engine damage, reduced performance, and potentially unsafe driving conditions.
5. How do I fix the P0351 code on my 2006 Toyota Highlander?
Repairs may include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, or replacing the spark plugs. Testing the ECM may also be necessary.
6. How do you diagnose the P0351 code on a 2006 Toyota Highlander?
A mechanic will use an OBDII scanner to confirm the code, visually inspect the ignition coil and wiring, test the coil’s primary and secondary circuits, and check the spark plugs.
7. Can a bad spark plug cause the P0351 code?
Yes, a worn or damaged spark plug can cause the ignition coil to malfunction, triggering the P0351 code.
8. How much does it cost to repair the P0351 code on a 2006 Toyota Highlander?
Costs vary based on the specific issue, but replacing an ignition coil typically costs between $100 and $300, including labor.
9. Can I fix the P0351 code myself on a 2006 Toyota Highlander?
If you’re experienced with car repairs, you can attempt to replace the ignition coil or inspect wiring. However, it’s best to consult a professional for accurate diagnosis and repair.
10. What happens if the P0351 code is ignored?
Ignoring this code can lead to severe engine damage, increased emissions, poor performance, and potential failure of other ignition system components.
Discuss the causes and fixes for P0351 2006 Toyota Highlander OBDII Code
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i have a 2006 toyota highlander 3.3 v6 that died when driving now has 5 codes all related to ignition coils each cyl p0351,p0353,p0354,p0355,p0356 will start and run bad with key in start position when release key it die any help would be great Thanks
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We had a couple of vehicles with similar symptoms and the problem was faulty ignition coils. The engine will die because almost all the coils are bad. Unfortunately, other than the coils I have not seen any other component setting the those codes.
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