P0455 2009 Nissan Pathfinder 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 Pathfinder 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 Pathfinder 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 Pathfinder?
- 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 Pathfinder?
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 Pathfinder 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 Pathfinder Code
1. What does code P0455 mean on a 2009 Nissan Pathfinder?
P0455 indicates a "Gross Leak Detected" in the EVAP (Evaporative Emission Control) system, suggesting a significant issue with fuel vapor containment.
2. What are the common symptoms of a P0455 code?
Symptoms may include the check engine light turning on, a noticeable fuel smell near the vehicle, or slightly reduced fuel efficiency, though performance is usually unaffected.
3. What causes the EVAP system to trigger a P0455 code?
Common causes include a loose or damaged gas cap, a cracked or disconnected EVAP hose, a faulty purge valve, or a damaged charcoal canister.
4. Can a loose gas cap cause code P0455?
Yes, a loose or improperly sealed gas cap is one of the most common causes of this code and should be checked first.
5. How do I fix a P0455 code on my 2009 Nissan Pathfinder?
Start by tightening or replacing the gas cap, then inspect EVAP hoses and components for damage. If the issue persists, diagnostic testing may be needed to identify faulty parts like the purge or vent valve.
6. Can I drive my 2009 Nissan Pathfinder with a P0455 code?
Yes, you can drive with this code, but it’s recommended to address it promptly to avoid potential emissions issues or long-term damage to the EVAP system.
7. How can I diagnose the cause of a P0455 code?
Use an OBDII scanner to confirm the code, visually inspect the gas cap and EVAP hoses, and perform a smoke test to locate leaks if necessary.
8. What tools are needed to fix a P0455 code?
Basic tools like a wrench set, an OBDII scanner, and potentially a smoke machine for leak detection are helpful for diagnosing and repairing the issue.
9. How much does it cost to repair a P0455 code?
Repair costs vary depending on the cause. Replacing a gas cap may cost $10–$30, while repairing EVAP system components could range from $100 to $600.
10. Will clearing the P0455 code fix the problem?
Clearing the code will turn off the check engine light temporarily, but the underlying issue must be fixed to prevent the code from returning.
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