AutoCodes – Nissan – P0455 2012 Nissan Sentra

P0455 2012 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 2012 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.

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Code Popularity 10,992

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0455 2012 Nissan Sentra Description

This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition.
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.

OBDII Code P0455 2012 Nissan Sentra - EVAP Control System Gross Leak Detected - AutoCodes.com — P0455 2012 Nissan Sentra Code - EVAP Control System Gross Leak Detected

What does this mean?

What are the Possible Causes of the DTC P0455 2012 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 2012 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.

What does this mean?

Code Tech Notes

The P0455 it's a very common code because the code is set if the gas cap is loose or missing. Start by tightening the gas cap and clearing the code. In most cases, the code can be clear by disconnecting the car battery for about 30 minutes.

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 2012 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.

Need more information about the P0455 2012 Nissan Sentra code?

Need more information on how to fix the P0455 2012 Nissan Sentra code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0455 2012 Nissan Sentra Code

What does the OBDII code P0455 mean for a 2012 Nissan Sentra?

The OBDII code P0455 indicates that the vehicle's onboard diagnostic system has detected a gross leak in the Evaporative Emission Control (EVAP) system.

What are common symptoms of a P0455 code in a 2012 Nissan Sentra?

Common symptoms include the check engine light being illuminated, possible rough idling, decreased fuel efficiency, and in some cases, a noticeable fuel odor.

What could cause the P0455 code in a 2012 Nissan Sentra?

Possible causes include a loose or damaged gas cap, cracked or damaged EVAP hoses, a failing EVAP canister, or malfunctioning purge or vent valves.

How can I check for a gas cap issue related to a P0455 code?

You can check the gas cap by ensuring it is tightened securely. If itâ€™s cracked or damaged, replacing it may resolve the issue.

What are some repair tips for fixing a P0455 code in my 2012 Nissan Sentra?

Start by inspecting the gas cap and ensuring it seals properly. Then, check for any visible damage to EVAP hoses and connectors. If necessary, use a smoke test to identify leaks in the system.

Is it safe to drive a 2012 Nissan Sentra with a P0455 code?

While it may be safe to drive, it is advisable to address the issue promptly to avoid potential fuel evaporation and emissions problems.

Can a P0455 code lead to further issues if not fixed?

Yes, if left unresolved, a P0455 code can result in increased emissions, decreased fuel efficiency, and may trigger other related codes in the vehicle's system.

How much does it typically cost to repair the P0455 code in a 2012 Nissan Sentra?

Repair costs can vary widely based on the underlying issue but may range from $20 for a gas cap replacement to several hundred dollars for EVAP system repairs.

Will resetting the check engine light fix the P0455 code?

Resetting the check engine light will not fix the underlying issue causing the P0455 code; the problem must be diagnosed and repaired for the code to clear permanently.