P0355 2006 Toyota Highlander Code - Ignition Coil 5 Primary/Secondary Circuit
Quick Answer
The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 5, Ignition Coil 5 harness is open or shorted, Ignition Coil 5 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
- P0355 2006 Toyota Highlander indicates Ignition Coil 5 Primary/Secondary Circuit.
- Common causes
- Common causes include Faulty Ignition Coil 5, Ignition Coil 5 harness is open or shorted, Ignition Coil 5 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 P0355 2006 Toyota Highlander Description
What are the Possible Causes of the DTC P0355 2006 Toyota Highlander?
- Faulty Ignition Coil 5
- Ignition Coil 5 harness is open or shorted
- Ignition Coil 5 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0355 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 P0355 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 P0355 2006 Toyota Highlander code?
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Frequently Asked Questions about P0355 2006 Toyota Highlander Code
1. What does the OBDII code P0355 mean for a 2006 Toyota Highlander?
P0355 indicates a malfunction in the ignition coil "E" (cylinder 5) primary or secondary circuit, which may affect engine performance.
2. What are the common symptoms of a P0355 code?
Symptoms include engine misfires, rough idling, reduced power, poor fuel economy, and the Check Engine Light being illuminated.
3. What causes the P0355 code to appear?
Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition circuit, a malfunctioning PCM (Powertrain Control Module), or a bad spark plug.
4. How can I locate cylinder 5 in my 2006 Toyota Highlander?
Cylinder 5 is located on the rear bank of the engine (closest to the firewall) in the V6 engine configuration. Refer to the firing order diagram for clarity.
5. Can I still drive my Toyota Highlander with a P0355 code?
Driving with this code is not recommended as it can cause further damage to the engine or catalytic converter due to unburned fuel from misfires.
6. How do I diagnose a P0355 code?
Start by inspecting the ignition coil for cylinder 5, checking for damaged wiring or loose connections, and testing the coil with a multimeter. A scan tool can also help verify misfire data.
7. How do I fix a P0355 code on my 2006 Toyota Highlander?
Repairs may include replacing the faulty ignition coil, repairing damaged wiring or connectors, replacing the spark plug, or reprogramming/updating the PCM.
8. How much does it cost to fix a P0355 code?
The cost varies depending on the repair, but replacing an ignition coil typically costs $100–$300, including parts and labor.
9. Can a bad spark plug cause the P0355 code?
Yes, a worn or damaged spark plug can cause the ignition coil to malfunction, triggering the P0355 code.
10. Will clearing the P0355 code with a scan tool fix the problem?
Clearing the code will turn off the Check Engine Light temporarily, but the underlying issue must be resolved to prevent the code from returning.
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