AutoCodes – Toyota – P0455 2009 Toyota Camry

P0455 2009 Toyota Camry Code - EVAP 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 Toyota Camry indicates EVAP 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 8,224
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0455 2009 Toyota Camry 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.
5 hours* after the ignition switch is turned OFF, the leak detection pump creates negative pressure (vacuum) in the EVAP system. The ECM monitors for leaks and actuator malfunctions based on the EVAP pressure.
OBDII Code P0455 2009 Toyota Camry - EVAP System Gross Leak Detected - AutoCodes.com
P0455 2009 Toyota Camry Code - EVAP System Gross Leak Detected

What are the Possible Causes of the DTC P0455 2009 Toyota Camry?

  • 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 Toyota Camry?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0455 2009 Toyota Camry 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 2009 Toyota Camry code?

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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 2009 Toyota Camry Code

1. What does the OBDII code P0455 mean for a 2009 Toyota Camry?

P0455 indicates a "Gross Leak" in the EVAP (Evaporative Emission Control) system, meaning a large leak or disconnection has been detected.

2. What are the common symptoms of P0455 in a 2009 Toyota Camry?

Symptoms may include the check engine light turning on, a fuel smell near the vehicle, and potentially reduced fuel efficiency.

3. What typically causes the P0455 code in a 2009 Toyota Camry?

Common causes include a loose or damaged gas cap, cracked or disconnected EVAP hoses, or a faulty purge valve or vent valve.

4. Can a loose gas cap trigger the P0455 code?

Yes, a loose, missing, or damaged gas cap is one of the most common reasons for the P0455 code.

5. How do I check for a gas cap issue related to P0455?

Inspect the gas cap for cracks, ensure it is tightened securely, and replace it if it is damaged or worn.

6. How serious is the P0455 code on a 2009 Toyota Camry?

The P0455 code is not typically urgent but should be addressed promptly to avoid potential emissions system damage and maintain fuel efficiency.

7. Can I drive my 2009 Toyota Camry with the P0455 code?

Yes, the car is usually safe to drive, but you should resolve the issue soon to ensure proper emissions control and fuel economy.

8. How is the P0455 code diagnosed in a 2009 Toyota Camry?

A mechanic may use a smoke machine to detect leaks in the EVAP system or inspect components like the gas cap, hoses, and valves.

9. What repairs are needed to fix the P0455 code?

Repairs may include tightening or replacing the gas cap, repairing or replacing damaged EVAP hoses, or replacing faulty purge or vent valves.

10. Will clearing the P0455 code fix the problem on my 2009 Toyota Camry?

Clearing the code will erase the warning temporarily, but the issue causing the code must be repaired to prevent it from returning.

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