P0351 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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.
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Frequently Asked Questions about P0351 2016 Toyota RAV4 Code
1. What does the OBDII code P0351 mean on a 2016 Toyota RAV4?
P0351 indicates a malfunction in the ignition coil circuit for cylinder 1, specifically in its primary or secondary wiring.
2. What are the common symptoms of code P0351 in a 2016 Toyota RAV4?
Symptoms include rough idling, engine misfires, reduced power, poor fuel economy, and an illuminated check engine light.
3. What causes the P0351 code to appear in my Toyota RAV4?
Common causes include a faulty ignition coil, damaged wiring or connectors, a malfunctioning PCM (Powertrain Control Module), or spark plug issues.
4. Can I drive my 2016 Toyota RAV4 with the P0351 code?
Driving with this code is not recommended, as it can cause further engine damage and poor performance, especially if the engine is misfiring.
5. How do I diagnose the P0351 code on a Toyota RAV4?
Start by inspecting the ignition coil, wiring, and connectors for damage or corrosion. Use a multimeter to test the coil and related circuits for continuity and resistance.
6. How do I fix the P0351 code on my 2016 Toyota RAV4?
Repairs may involve replacing the faulty ignition coil, repairing damaged wiring or connectors, replacing spark plugs, or reprogramming the PCM if necessary.
7. How much does it cost to fix the P0351 code on a Toyota RAV4?
Repair costs vary but typically range from $150 to $300 for an ignition coil replacement, depending on labor rates and parts pricing.
8. Can spark plugs cause the P0351 code on my 2016 Toyota RAV4?
Yes, worn or damaged spark plugs can cause ignition coil issues, triggering the P0351 code. It’s important to inspect and replace them if needed.
9. Will clearing the P0351 code resolve the issue permanently?
Clearing the code may turn off the check engine light temporarily, but the problem will reoccur unless the underlying issue is properly repaired.
10. How can I prevent the P0351 code from happening again?
Regular maintenance, including inspecting and replacing spark plugs and ignition coils as needed, and checking wiring for damage, can help prevent this issue.
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