P0455 2008 Nissan Maxima Code - EVAP Control System Gross Leak Detected
Quick Answer
This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. Common causes include Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close. 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 2008 Nissan Maxima indicates EVAP Control System Gross Leak Detected.
- Common causes
- Common causes include Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close.
- 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.
Code P0455 2008 Nissan Maxima Description
The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.
What are the Possible Causes of the DTC P0455 2008 Nissan Maxima?
- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking
How to Fix the DTC P0455 2008 Nissan Maxima?
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
There is a factory Nissan service bulletin to help diagnose the P0455 code:
Nissan Factory Service Bulletin OBDII Code P0455
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0455 2008 Nissan Maxima 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 P0455 2008 Nissan Maxima code?
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Need Help with the Code?
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Frequently Asked Questions about P0455 2008 Nissan Maxima Code
1. What does the OBDII code P0455 mean for a 2008 Nissan Maxima?
P0455 indicates a "Gross Leak Detected" in the EVAP (Evaporative Emission Control) system, meaning there is a large leak or complete disconnection in the system.
2. What are the common symptoms of a P0455 code on a 2008 Nissan Maxima?
Common symptoms include an illuminated check engine light, a slight fuel odor near the vehicle, and potentially reduced fuel efficiency.
3. What causes a P0455 code on a 2008 Nissan Maxima?
Common causes include a loose or damaged gas cap, cracked or disconnected EVAP hoses, a faulty purge valve, or a leaking EVAP canister.
4. Can a loose gas cap trigger a P0455 code?
Yes, a loose, missing, or damaged gas cap is one of the most common causes of a P0455 code.
5. How do I fix a P0455 code on a 2008 Nissan Maxima?
Start by tightening or replacing the gas cap. If the code persists, inspect or replace damaged EVAP hoses, purge valve, or the EVAP canister.
6. Can I drive my 2008 Nissan Maxima with a P0455 code?
Yes, you can drive with this code, but it’s recommended to address it promptly as it may affect fuel efficiency and emissions.
7. How do I diagnose a P0455 code on my 2008 Nissan Maxima?
Use an OBDII scanner to confirm the code, then visually inspect the gas cap, EVAP hoses, and connections. Perform a smoke test if necessary to locate leaks.
8. Does a P0455 code affect vehicle performance?
In most cases, it does not directly affect performance, but it can cause a fuel odor and slightly reduced fuel efficiency.
9. How much does it cost to fix a P0455 code on a 2008 Nissan Maxima?
Costs vary depending on the cause: replacing a gas cap costs around $20, while repairing hoses or EVAP components can range from $100 to $500.
10. Will clearing the P0455 code fix the problem permanently?
Clearing the code removes the warning temporarily, but the underlying issue must be addressed to prevent the code from returning.
Discuss the causes and fixes for P0455 2008 Nissan Maxima OBDII Code
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Got a new cap and still got the ses code again. I also got a new "boot" on the left side of my intake manifold as well as a new "release" valve for the gas tank and still got the ses code. Running out of money here.
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Next step is to remove and inspect the EVAP canister. I have seen a few canister with road damage. Gross leak are usually, broken canister or gas cap.
If the canister is OK, there is a chance that the EVAP canister purge volume control solenoid valve may be faulty, but that's not very common.
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The sensor in the gas tank wasn't plugged in right. Also the autozone gas caps don't seal well enough so i put back the original and everything is good.
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