P0351 2009 Toyota Prius 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 2009 Toyota Prius 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 2009 Toyota Prius Description
What are the Possible Causes of the DTC P0351 2009 Toyota Prius?
- 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 2009 Toyota Prius?
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 2009 Toyota Prius 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 2009 Toyota Prius code?
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Frequently Asked Questions about P0351 2009 Toyota Prius Code
1. What does the OBDII code P0351 indicate on a 2009 Toyota Prius?
The code P0351 indicates that there is an issue with the primary or secondary circuit of the ignition coil "A" (Coil 1), which could be due to electrical failures or faults in the coil itself.
2. What are common symptoms of code P0351 in a 2009 Toyota Prius?
Symptoms include engine misfiring, rough idling, decreased fuel efficiency, the engine stalling, and the Check Engine Light turning on.
3. What causes the ignition coil code P0351 to appear on a 2009 Toyota Prius?
Possible causes include faulty ignition coil, bad spark plug, damaged coil wiring, or issues with the coil control circuit, including poor electrical connections or a bad engine control module (ECM).
4. How can I fix the P0351 code on my 2009 Toyota Prius?
Repair strategies include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors in the coil circuit, and checking for and replacing any faulty spark plugs.
5. Is it safe to drive my 2009 Toyota Prius with the P0351 code?
While you can drive for a short distance, it is not advisable to continue driving with this issue as it can lead to engine performance problems, increased emissions, and potential damage to other components.
6. How do I diagnose the P0351 code in a 2009 Toyota Prius?
Diagnosis involves checking the ignition coil and its connections for damage or wear, using an OBD-II scanner to check for additional codes, and measuring the resistance and voltage with a multimeter to confirm the coil's functionality.
7. Could the P0351 code be triggered by a bad spark plug in my Prius?
Yes, a bad spark plug can lead to misfires which might trigger the P0351 code as the system detects an inconsistency in the ignition process.
8. What is the cost of repairing the P0351 code in a 2009 Toyota Prius?
The cost can vary widely depending on the specific repair needed, but generally, replacing an ignition coil can cost anywhere from $200 to $400 including parts and labor.
9. Can a poor battery or alternator affect the ignition coil functioning in a 2009 Prius, thus causing the P0351 code?
Yes, poor battery performance or a failing alternator can affect the electrical system voltage, which may lead to inadequate power supply to the ignition coil, potentially causing this error code.
10. How important is it to address the P0351 code immediately in a 2009 Toyota Prius?
It's important to address this code promptly as ignoring it can lead to more severe engine issues, potential vehicle breakdowns, and costly repairs down the line.
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