P0455 2009 Nissan Sentra 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 2009 Nissan Sentra 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 2009 Nissan Sentra 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 2009 Nissan Sentra?
- 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 2009 Nissan Sentra?
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 2009 Nissan Sentra 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 2009 Nissan Sentra Code
1. What does OBDII code P0455 mean on a 2009 Nissan Sentra?
Code P0455 indicates that the EVAP (Evaporative Emission Control) system has detected a large leak, often referred to as a "gross leak."
2. What are the common symptoms of code P0455 on a 2009 Nissan Sentra?
The most common symptoms include the check engine light turning on, a potential fuel odor near the vehicle, and possibly reduced fuel efficiency.
3. What causes the P0455 code on a 2009 Nissan Sentra?
Common causes include a loose or damaged gas cap, a cracked or disconnected EVAP hose, a faulty purge valve, or a damaged EVAP canister.
4. Can a loose gas cap trigger code P0455 in my 2009 Nissan Sentra?
Yes, a loose or missing gas cap is one of the most common reasons for triggering the P0455 code.
5. How do I fix code P0455 on my 2009 Nissan Sentra?
Start by ensuring the gas cap is tightened properly or replaced if damaged. If the issue persists, inspect EVAP hoses and components for damage or leaks and replace faulty parts as needed.
6. Is it safe to drive with a P0455 code on my 2009 Nissan Sentra?
Yes, it’s generally safe to drive with a P0455 code, but it should be addressed promptly to prevent emissions system damage and to ensure proper fuel efficiency.
7. How can I test for an EVAP system leak in my 2009 Nissan Sentra?
A smoke test is commonly used by mechanics to identify leaks in the EVAP system by introducing smoke and observing where it escapes.
8. Will fixing the gas cap clear the P0455 code on my 2009 Nissan Sentra?
If the gas cap was the cause, tightening or replacing it may resolve the issue. The code can be cleared using an OBDII scanner or may clear on its own after several drive cycles.
9. What tools are needed to diagnose a P0455 code on a 2009 Nissan Sentra?
An OBDII scanner is essential for reading and clearing the code. A smoke machine may also be used to locate EVAP system leaks.
10. How much does it cost to repair code P0455 on a 2009 Nissan Sentra?
Repair costs vary depending on the cause. Replacing a gas cap may cost $20-$30, while repairing EVAP system components can range from $100 to $600.
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