P0304 2004 Infiniti G35 Code - Number 4 Cylinder Misfire Detected
Quick Answer
When a misfire occurs, engine speed will fluctuate. Common causes include Faulty Spark Plug #4, Clogged or faulty Fuel Injector #4, Faulty Ignition Coil #4. 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
- P0304 2004 Infiniti G35 indicates Number 4 Cylinder Misfire Detected.
- Common causes
- Common causes include Faulty Spark Plug #4, Clogged or faulty Fuel Injector #4, Faulty Ignition Coil #4.
- 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 P0304 2004 Infiniti G35 Description
What are the Possible Causes of the DTC P0304 2004 Infiniti G35?
- Faulty Spark Plug #4
- Clogged or faulty Fuel Injector #4
- Faulty Ignition Coil #4
- Fuel Injector #4 harness is open or shorted
- Fuel Injector #4 circuit poor electrical connection
- Ignition Coil #4 harness is open or shorted
- Ignition Coil #4 circuit poor electrical connection
- Insufficient cylinder 4 compression
- Incorrect fuel pressure
- Intake air leak
How to Fix the DTC P0304 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 P0304 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.
Need more information about the P0304 2004 Infiniti G35 code?
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Frequently Asked Questions about P0304 2004 Infiniti G35 Code
1. What are common symptoms of OBDII code P0304 on a 2004 Infiniti G35?
Symptoms may include engine misfires, rough idling, loss of power, and potentially increased fuel consumption.
2. What are the possible causes of a number 4 cylinder misfire in a 2004 Infiniti G35?
Common causes may include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, or issues with the engine's compression.
3. How can I diagnose the source of the number 4 cylinder misfire on my 2004 Infiniti G35?
Diagnosis typically involves checking the spark plugs, ignition coils, fuel injectors, and performing a compression test to pinpoint the exact cause.
4. Can a dirty or clogged fuel injector trigger OBDII code P0304 in a 2004 Infiniti G35?
Yes, a dirty or clogged fuel injector can disrupt the air-fuel mixture in the number 4 cylinder, leading to misfires and triggering the error code.
5. Is it safe to continue driving my 2004 Infiniti G35 with OBDII code P0304 indicating a number 4 cylinder misfire?
It is not recommended to drive the vehicle with a misfire, as it can lead to further damage to the engine and other components. Prompt diagnosis and repair are advised.
6. Are there any DIY repair tips for addressing OBDII code P0304 on a 2004 Infiniti G35?
DIY repair tips may include checking and replacing spark plugs, ignition coils, or fuel injectors if found to be faulty. However, it's recommended to seek professional help for an accurate diagnosis.
7. Can a vacuum leak cause a number 4 cylinder misfire in a 2004 Infiniti G35?
Yes, a vacuum leak can disrupt the air intake, affecting the air-fuel mixture in the cylinder and potentially leading to misfires and triggering OBDII code P0304.
8. How important is it to address OBDII code P0304 promptly in a 2004 Infiniti G35?
It is crucial to address the code promptly to prevent further damage to the engine, ensure optimal performance, and maintain fuel efficiency.
9. Will resetting the OBDII system clear the P0304 code on a 2004 Infiniti G35?
Resetting the system may temporarily clear the code, but if the underlying issue causing the misfire is not addressed, the code is likely to reappear.
10. Should I seek professional help for diagnosing and repairing OBDII code P0304 on my 2004 Infiniti G35?
For accurate diagnosis and proper repair of the number 4 cylinder misfire, it is recommended to seek the expertise of a qualified mechanic or technician familiar with Infiniti vehicles.
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