P0455 2006 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 2006 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 2006 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 2006 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 2006 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
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0455 2006 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 2006 Nissan Altima Sedan Code
1. What does the OBDII code P0455 mean on a 2006 Nissan Altima?
P0455 indicates a "Gross Leak Detected" in the EVAP (Evaporative Emission Control) system, meaning there is a large leak in the system that prevents it from containing fuel vapors.
2. What are the symptoms of a P0455 code on a 2006 Nissan Altima?
Common symptoms include the Check Engine Light turning on, a noticeable fuel smell near the vehicle, and possibly reduced fuel efficiency. However, drivability is typically not affected.
3. What causes a P0455 code in a 2006 Nissan Altima?
The most common causes are a loose or damaged gas cap, a cracked or disconnected EVAP hose, a defective purge valve, or a leaking EVAP canister.
4. Can a loose gas cap trigger the P0455 code on a 2006 Nissan Altima?
Yes, a loose, missing, or damaged gas cap is one of the most common reasons for the P0455 code.
5. How do I fix the P0455 code on my 2006 Nissan Altima?
Start by checking and tightening the gas cap or replacing it if damaged. If the problem persists, inspect the EVAP hoses, purge valve, and canister for leaks or damage.
6. Is it safe to drive with the P0455 code on a 2006 Nissan Altima?
Yes, it is generally safe to drive, but ignoring the code can lead to higher emissions and potentially worsen the issue over time.
7. How do I diagnose the P0455 code on my 2006 Nissan Altima?
Use an OBDII scanner to confirm the code, then visually inspect the gas cap, EVAP hoses, and components for leaks or damage. A smoke test may be needed to detect hard-to-find leaks.
8. How much does it cost to repair a P0455 code on a 2006 Nissan Altima?
The cost depends on the cause. Replacing a gas cap may cost $20-$30, while more extensive repairs like replacing a purge valve or EVAP canister can cost $150-$500 or more.
9. Can extreme weather cause the P0455 code on a 2006 Nissan Altima?
Yes, extreme heat or cold can sometimes cause EVAP system components to crack or fail, leading to a gross leak.
10. Will clearing the P0455 code solve the problem on my 2006 Nissan Altima?
Clearing the code without fixing the underlying issue will only temporarily turn off the Check Engine Light. The code will return until the cause is addressed.
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