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P0455 2004 Infiniti G35 Code - EVAP Control System Gross Leak Detected

Quick Answer

The P0455 code for a 2004 Infiniti G35 indicates that the vehicle's EVAP (Evaporative Emission Control) system has detected a gross leak. Common causes include Loose or damaged gas cap, Cracked or disconnected EVAP hoses, Faulty purge valve. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0455 2004 Infiniti G35 indicates EVAP Control System Gross Leak Detected.
Common causes
Common causes include Loose or damaged gas cap, Cracked or disconnected EVAP hoses, Faulty purge valve.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0455 2004 Infiniti G35 Description

The P0455 code for a 2004 Infiniti G35 indicates that the vehicle's EVAP (Evaporative Emission Control) system has detected a gross leak. The EVAP system is responsible for capturing and storing fuel vapors to prevent them from escaping into the atmosphere. A gross leak means that there is a significant breach in the system, allowing fuel vapors to leak out. This can lead to increased emissions, decreased fuel efficiency, and potential safety hazards.

OBDII Code P0455 2004 Infiniti G35 - EVAP Control System Gross Leak Detected
P0455 2004 Infiniti G35 Code - EVAP Control System Gross Leak Detected

Common Causes of P0455 2004 Infiniti G35

  1. Loose or damaged gas cap
  2. Cracked or disconnected EVAP hoses
  3. Faulty purge valve
  4. Leak in the EVAP canister
  5. Damage to the EVAP system components

Symptoms of P0455 2004 Infiniti G35

  1. Check Engine Light illuminated
  2. Strong fuel odor near the vehicle
  3. Decreased fuel efficiency
  4. Hissing or whistling noise from the fuel tank area
  5. Difficulty starting the engine

How to Fix P0455 2004 Infiniti G35

  1. Inspect the gas cap for proper sealing and tighten or replace if necessary.
  2. Check all EVAP hoses for cracks, leaks, or disconnections and repair or replace as needed.
  3. Test the purge valve for proper operation and replace if faulty.
  4. Inspect the EVAP canister for leaks or damage and replace if necessary.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0455 2004 Infiniti G35

The cost of repairing a P0455 code on a 2004 Infiniti G35 can vary depending on the specific cause of the issue. On average, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost could be anywhere from $150 to $500. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple shops to get an accurate estimate.

What does this mean?

Tech Notes for P0455 2004 Infiniti G35

The P0455 it’s very common code because the code is set if the gas cap is loose or missing. Start by tightening the gas cap and clearing the code. In most cases, the code can be clear by disconnecting the car battery for about 30 minutes.



There is an Infiniti Service Bulletin to help diagnose the P0455 code:

Infiniti Factory Service Bulletin OBDII Code P0455

When is the Code Detected?

Malfunction is detected when EVAP control system has a leak, EVAP control system does not operate properly.

Need more information about the P0455 2004 Infiniti G35 code?

Need more information on how to fix the P0455 2004 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0455 2004 Infiniti G35 Code

1. What does the OBDII code P0455 mean for a 2004 Infiniti G35?

P0455 indicates that the EVAP (Evaporative Emission Control) system has detected a large leak, which means fuel vapors are not being properly contained.

2. What are the common symptoms of a P0455 code on a 2004 Infiniti G35?

Symptoms may include an illuminated check engine light, a noticeable fuel smell near the vehicle, and possibly reduced fuel efficiency.

3. What causes the P0455 code on a 2004 Infiniti G35?

Common causes include a loose or damaged gas cap, a cracked or disconnected EVAP hose, a faulty purge valve, or a malfunctioning EVAP canister.

4. Can a loose gas cap trigger the P0455 code on a 2004 Infiniti G35?

Yes, a loose or improperly sealed gas cap is one of the most common reasons for this code.

5. How can I diagnose the P0455 code on my 2004 Infiniti G35?

Start by inspecting the gas cap for tightness or damage, then check EVAP system hoses for cracks or disconnections. A smoke test may help identify leaks.

6. Is it safe to drive my 2004 Infiniti G35 with a P0455 code?

While the car is generally safe to drive, ignoring the code can lead to decreased fuel efficiency and potential long-term damage to the EVAP system.

7. How do I fix the P0455 code on a 2004 Infiniti G35?

Common fixes include tightening or replacing the gas cap, repairing damaged hoses, replacing a faulty purge valve, or addressing issues with the EVAP canister.

8. How much does it cost to repair a P0455 code on a 2004 Infiniti G35?

Costs vary depending on the issue, ranging from $20 for a gas cap replacement to $200–$600 for professional repairs of the EVAP system.

9. Can extreme weather conditions cause the P0455 code on a 2004 Infiniti G35?

Yes, extreme heat or cold can cause EVAP system components, such as hoses, to crack or deteriorate, leading to leaks.

10. Will clearing the P0455 code fix the issue on my 2004 Infiniti G35?

Clearing the code without addressing the underlying problem may temporarily turn off the check engine light, but the code will likely return.

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