P0455 2008 Nissan Altima Sedan 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 Altima Sedan 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 Altima Sedan 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 Altima Sedan?
- 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 Altima Sedan?
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
There is a factory Nissan service bulletin for the 2008 Nissan Altima Sedan:
2008 Nissan Altima Sedan Factory Service Bulletin OBDII Code P0455
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0455 2008 Nissan Altima Sedan 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 P0455 2008 Nissan Altima Sedan Code
What does the OBDII code P0455 mean on a 2008 Nissan Altima Sedan?
1. P0455 indicates a "Gross Leak" in the EVAP (Evaporative Emission Control) system, meaning the system has detected a large leak or disconnection. 2.
What are the symptoms of code P0455 on a 2008 Nissan Altima?
Common symptoms include an illuminated check engine light, a possible fuel odor near the vehicle, and no noticeable performance issues. 3.
What causes the P0455 code on a 2008 Nissan Altima?
The most common causes include a loose or missing gas cap, a damaged EVAP hose, a faulty vent valve, or a failed purge valve. 4.
Can a loose gas cap trigger the P0455 code on my 2008 Nissan Altima?
Yes, a loose, missing, or damaged gas cap is one of the most common reasons for this code. 5.
How do I fix the P0455 code on a 2008 Nissan Altima?
Start by tightening or replacing the gas cap. If the code persists, inspect the EVAP system for damaged hoses, faulty valves, or leaks. 6.
Is it safe to drive with the P0455 code on a 2008 Nissan Altima?
Yes, it’s generally safe to drive; however, it may lead to increased emissions and should be addressed to avoid further issues. 7.
How can I diagnose the P0455 code on my 2008 Nissan Altima?
Use an OBDII scanner to confirm the code, then visually inspect the gas cap, EVAP hoses, and valve connections for damage or disconnections. 8.
How much does it cost to fix the P0455 code on a 2008 Nissan Altima?
Repairs can range from $20 for a new gas cap to $200-$600 for more complex issues like replacing a purge or vent valve. 9.
Can extreme weather cause the P0455 code on a 2008 Nissan Altima?
Yes, extreme heat or cold can sometimes cause EVAP system components to crack or loosen, leading to a leak and setting this code. 10.
Will clearing the code P0455 solve the problem on my 2008 Nissan Altima?
Clearing the code will turn off the check engine light temporarily, but the issue must be fixed to prevent the code from returning.
Discuss the causes and fixes for P0455 2008 Nissan Altima Sedan OBDII Code
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