P0351 2010 Toyota Camry Code - Ignition Coil 1 Primary/Secondary Circuit
Quick Answer
The DIS is a 1-cylinder ignition system in which each cylinder is ignited by one ignition coil 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 2010 Toyota Camry 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 2010 Toyota Camry Description
The 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 on and off the current to the primary coil. 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.
What are the Possible Causes of the DTC P0351 2010 Toyota Camry?
- 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 2010 Toyota Camry?
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 2010 Toyota Camry 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 2010 Toyota Camry Code
What does the OBDII code P0351 mean on a 2010 Toyota Camry?
P0351 indicates a malfunction in the ignition coil circuit for cylinder 1, specifically in its primary or secondary circuit.
What are the symptoms of code P0351 in a 2010 Toyota Camry?
Common symptoms include engine misfiring, rough idling, reduced power, poor fuel economy, and the check engine light turning on.
What causes the P0351 code to appear?
Potential causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a failing PCM (Powertrain Control Module), or a bad spark plug.
Can I drive my 2010 Toyota Camry with a P0351 code?
While the car may still drive, it’s not recommended, as engine misfires can cause further damage to components like the catalytic converter.
How do I diagnose the P0351 code?
Start by inspecting the ignition coil and its wiring for damage or corrosion. Use a multimeter to check for proper voltage and resistance in the circuit. Swap the coil with another cylinder to see if the problem follows the coil.
How do I fix the P0351 code?
Replacing the faulty ignition coil often resolves the issue. If the wiring or connectors are damaged, repair or replace them. In rare cases, the PCM may need reprogramming or replacement.
How much does it cost to fix the P0351 code?
Replacing an ignition coil typically costs between $100 and $200, including parts and labor. Additional costs may apply if wiring or the PCM needs repair.
Can a bad spark plug cause a P0351 code?
Yes, a worn or damaged spark plug in cylinder 1 can create excessive resistance and trigger this code.
How can I prevent the P0351 code from recurring?
Regularly inspect and maintain the ignition system, including replacing spark plugs and ignition coils as recommended in your owner’s manual.
Will clearing the P0351 code solve the problem?
Clearing the code without addressing the underlying issue will only temporarily turn off the check engine light, and the code is likely to return.
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