P0351 2014 Toyota RAV4 Code - Ignition Coil 1 Primary/Secondary Circuit
Quick Answer
A Direct Ignition System (DIS) is a 1-cylinder ignition system in which each cylinder is ignited by one ignition coil assembly and one spark plug is connected to the end of each secondary wiring. 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 2014 Toyota RAV4 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 2014 Toyota RAV4 Description
The Engine Control Module (ECM) determines the ignition timing and transmits the ignition (IGT) signals to each cylinder. Using the IGT signal, the ECM turns the power transistor inside the igniter on and off. The power transistor, in turn, switches the current supplied to the primary coil on and off. When the current to the primary coil is cut off, a powerful voltage is generated in the secondary coil. This voltage is applied to the spark plugs, causing them to spark inside the cylinders. As the ECM cuts the current to the primary coil, the igniter sends back an ignition confirmation (IGF) signal to the ECM for each cylinder ignition.
If the ECM does not receive any IGF signals despite transmitting the IGT signal, it interprets this as a fault in the igniter and stores a Diagnostic Trouble Code (DTC).
What are the Possible Causes of the DTC P0351 2014 Toyota RAV4?
- 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 2014 Toyota RAV4?
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 2014 Toyota RAV4 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 2014 Toyota RAV4 code?
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Frequently Asked Questions about P0351 2014 Toyota RAV4 Code
1. What does OBDII code P0351 on my 2014 Toyota RAV4 indicate?
This code, Ignition Coil 1 Primary/Secondary Circuit, suggests a problem with the primary or secondary circuit of the ignition coil for cylinder 1.
2. What are the common symptoms of a P0351 code in a Toyota RAV4?
Common symptoms include engine misfires, rough idling, loss of power, and potential stalling of the vehicle.
3. What are the possible causes of a P0351 code in a 2014 Toyota RAV4?
The code P0351 can be triggered by a faulty ignition coil, damaged wiring or connectors related to the ignition coil, or issues with the engine control module (ECM).
4. How can I diagnose the cause of a P0351 code in my Toyota RAV4?
To diagnose the issue, you can inspect the ignition coil, check the wiring and connectors for any damage, and use a multimeter to test the continuity of the circuit.
5. Can a bad spark plug cause the P0351 code in a 2014 Toyota RAV4?
Yes, a faulty spark plug can lead to irregular firing of the ignition coil, triggering the P0351 code.
6. Is it safe to continue driving with a P0351 code in my Toyota RAV4?
It is not recommended to drive with a P0351 code as it can lead to further damage to the engine or catalytic converter. Immediate attention is advised.
7. How can I repair a P0351 code in my 2014 Toyota RAV4?
Repairing a P0351 code typically involves replacing the ignition coil for cylinder 1, repairing any damaged wiring or connectors, and clearing the code with an OBDII scanner.
8. Are there any preventive measures to avoid encountering the P0351 code in my Toyota RAV4?
Regular maintenance, such as checking and replacing spark plugs and ignition coils as per the manufacturer's recommendations, can help prevent issues leading to a P0351 code.
9. Can a DIY enthusiast fix a P0351 code in a 2014 Toyota RAV4?
Depending on your skill level and access to tools, DIY enthusiasts can replace the ignition coil or check and repair wiring issues causing the P0351 code.
10. How much can I expect to pay for repairing a P0351 code in a Toyota RAV4 at a dealership or a repair shop?
The cost of repairing a P0351 code can vary but typically ranges from $100 to $300 for parts and labor, with dealership costs potentially being higher than at an independent repair shop.
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