P0303 2004 Infiniti G35 Code - Number 3 Cylinder Misfire Detected
Quick Answer
When a misfire occurs, engine speed will fluctuate. Common causes include Faulty Spark Plug #3, Clogged or faulty Fuel Injector #3, Faulty Ignition Coil #3. 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
- P0303 2004 Infiniti G35 indicates Number 3 Cylinder Misfire Detected.
- Common causes
- Common causes include Faulty Spark Plug #3, Clogged or faulty Fuel Injector #3, Faulty Ignition Coil #3.
- 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 P0303 2004 Infiniti G35 Description
What are the Possible Causes of the DTC P0303 2004 Infiniti G35?
- Faulty Spark Plug #3
- Clogged or faulty Fuel Injector #3
- Faulty Ignition Coil #3
- Fuel Injector #3 harness is open or shorted
- Fuel Injector #3 circuit poor electrical connection
- Ignition Coil #3 harness is open or shorted
- Ignition Coil #3 circuit poor electrical connection
- Insufficient cylinder 3 compression
- Incorrect fuel pressure
- Intake air leak
How to Fix the DTC P0303 2004 Infiniti G35?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0303 2004 Infiniti G35 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 P0303 2004 Infiniti G35 Code
1. What are common symptoms of OBDII code P0303 on a 2004 Infiniti G35?
- Common symptoms include rough idle, engine misfire, loss of power, and sometimes, a noticeable decrease in fuel efficiency.
2. What are possible causes of a number 3 cylinder misfire in a 2004 Infiniti G35?
- Potential causes include faulty spark plugs, a malfunctioning ignition coil, vacuum leaks, clogged fuel injectors, or issues with the engine's compression.
3. How can I diagnose the source of the number 3 cylinder misfire on my 2004 Infiniti G35?
- You can diagnose the issue by performing a thorough inspection of the spark plugs, ignition coil, and fuel injectors. Additionally, conducting a compression test can help identify any internal engine issues.
4. Can driving with OBDII code P0303 on a 2004 Infiniti G35 cause further damage?
- Continuing to drive with a misfire can potentially damage the catalytic converter over time, leading to more costly repairs.
5. How can I repair OBDII code P0303 on my 2004 Infiniti G35?
- To repair the issue, you may need to replace the spark plugs, ignition coil, or fuel injector for the number 3 cylinder. It's also essential to address any underlying issues like vacuum leaks or engine compression problems.
6. Is it safe to continue driving my 2004 Infiniti G35 with a number 3 cylinder misfire?
- It's not recommended to drive the vehicle with a misfire as it can lead to other complications and potentially cause further damage to the engine.
7. Will resetting the OBDII code P0303 on a 2004 Infiniti G35 make the issue go away?
- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying problem causing the misfire in the number 3 cylinder.
8. How much does it typically cost to repair OBDII code P0303 on a 2004 Infiniti G35?
- The cost of repair can vary depending on the exact cause of the misfire and the parts that need replacing. It's advisable to consult a mechanic for an accurate estimate.
9. Can a DIY enthusiast fix OBDII code P0303 on a 2004 Infiniti G35?
- Simple tasks like replacing spark plugs may be doable for DIY enthusiasts, but diagnosing and repairing more complex issues like faulty ignition coils may require professional expertise.
10. How often should I perform maintenance to prevent OBDII code P0303 on my 2004 Infiniti G35?
- Regular maintenance, including changing spark plugs, inspecting ignition components, and addressing any engine performance issues promptly, can help prevent misfires and OBDII code P0303 on your Infiniti G35.
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