P0357 Lexus Code - Ignition Coil 7 Primary/Secondary Circuit Malfunction
Quick Answer
The diagnostic trouble code P0357 for a Lexus indicates an issue with the Ignition Coil 7 Primary/Secondary Circuit. Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Issues with the Engine Control Module (ECM). 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
- P0357 Lexus indicates Ignition Coil 7 Primary/Secondary Circuit Malfunction.
- Common causes
- Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Issues with the Engine Control Module (ECM).
- 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 P0357 Lexus Description
The diagnostic trouble code P0357 for a Lexus indicates an issue with the Ignition Coil 7 Primary/Secondary Circuit. This means that there is a malfunction in the electrical circuit that controls the ignition coil for cylinder 7 in the engine. The ignition coil is responsible for generating the high voltage needed to ignite the air-fuel mixture in the combustion chamber, so a malfunction in this circuit can lead to misfires, poor engine performance, and even engine damage if left unaddressed.
Common Causes of P0357 Lexus
- Faulty ignition coil
- Damaged wiring or connectors in the ignition coil circuit
- Issues with the Engine Control Module (ECM)
- Corrosion or water intrusion in the ignition coil circuit
- Poor electrical connections
Symptoms of P0357 Lexus
- Rough idling
- Engine misfires
- Loss of power
- Check engine light illuminated
- Increased fuel consumption
How to Fix P0357 Lexus
- Diagnose the issue using a scan tool to confirm the P0357 code and pinpoint the exact cause of the malfunction.
- Inspect the ignition coil, wiring, and connectors for any visible damage or corrosion.
- Test the ignition coil with a multimeter to check for proper resistance and continuity.
- Replace the faulty ignition coil, repair damaged wiring or connectors, and clear the code from the ECM.
- Perform a test drive to ensure the issue has been resolved and the vehicle is running smoothly.
Cost to Fix P0357 Lexus
The cost of repairing an Ignition Coil 7 Primary/Secondary Circuit Malfunction can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the cost of replacing an ignition coil can range from $100 to $300, including parts and labor. However, if additional repairs or diagnostic work is needed, the cost may increase. It is recommended to consult with a trusted mechanic or auto repair shop for a more accurate cost estimate based on your vehicle make and model. Keep in mind that labor rates can vary between $80 and $150 per hour, so it's best to inquire about rates in your local area.
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