AutoCodes – Toyota – P0456 2013 Toyota RAV4

P0456 2013 Toyota RAV4 Code - Evaporative Emission Control System Very Small Leak Detected

Quick Answer

5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. Common causes include Missing or loose filler 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
P0456 2013 Toyota RAV4 indicates Evaporative Emission Control System Very Small Leak Detected.
Common causes
Common causes include Missing or loose filler 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 973
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 31, 2022
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Code P0456 2013 Toyota RAV4 Description

5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. The Engine Control Module (ECM) monitors for leaks and actuator malfunctions based on the EVAP pressure. The leak detection pump creates negative pressure through the reference orifice. When the system is normal, the EVAP pressure is between 97 to 100 kPa(abs) [726 to 750 mmHg(abs) (Typical value)] and saturated within a minute. If the leak detection pump creates negative pressure (vacuum) in the EVAP system and the EVAP system pressure is measured. If the stabilized system pressure is higher than the second reference pressure, the ECM determines that the EVAP system has a small leak, illuminates the MIL, and stores the Diagnostic Trouble Code (DTC).
The Canister Pump Module is attached to the EVAP Canister and contains the Canister Pressure Sensor, the Leak Detection Pump, and the Vent Valve.
OBDII Code P0456 2013 Toyota RAV4 - Evaporative Emission Control System Very Small Leak Detected - AutoCodes.com
P0456 2013 Toyota RAV4 Code - Evaporative Emission Control System Very Small Leak Detected

What are the Possible Causes of the DTC P0456 2013 Toyota RAV4?

  • Missing or loose filler fuel cap
  • Incorrect fuel filler cap used
  • Fuel filler cap remains open or fails to close
  • Foreign matter caught in fuel filler cap
  • Leakage from canister pump module
  • Leakage from fuel tank
  • Leakage from canister

How to Fix the DTC P0456 2013 Toyota RAV4?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0456 2013 Toyota RAV4 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 P0456 2013 Toyota RAV4 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 P0456 2013 Toyota RAV4 Code

1. What does OBDII code P0456 on a 2013 Toyota RAV4 indicate?

The P0456 code signifies that the Evaporative Emission Control System has detected a very small leak.

2. What are common symptoms of a P0456 code in a 2013 Toyota RAV4?

Common symptoms include the check engine light illuminating on the dashboard, a slight fuel odor around the vehicle, and potential difficulties passing emissions tests.

3. What are the possible causes of a P0456 code in a 2013 Toyota RAV4?

Causes may include a loose or damaged gas cap, a cracked or disconnected EVAP hose, a faulty EVAP canister, or issues with the EVAP system's purge valve or vent valve.

4. How can I diagnose a P0456 code on my 2013 Toyota RAV4?

Diagnosis typically involves inspecting the gas cap for proper sealing, checking EVAP system hoses for damage, testing the EVAP canister for leaks, and using a smoke machine to pinpoint the exact location of the leak.

5. Can I still drive my 2013 Toyota RAV4 with a P0456 code?

In most cases, it is safe to drive the vehicle with a P0456 code, but it's essential to address the issue promptly to prevent potential fuel economy losses and emissions problems.

6. How can I repair a P0456 code on my 2013 Toyota RAV4?

Repair methods may include tightening or replacing the gas cap, repairing or replacing damaged EVAP system components, clearing the code with an OBDII scanner, and verifying the repair by performing a driving cycle.

7. Will a P0456 code reset itself on a 2013 Toyota RAV4?

If the underlying issue causing the code is not resolved, the check engine light may turn off temporarily after clearing the code but is likely to reappear once the system detects the same fault.

8. Can a P0456 code affect the performance of a 2013 Toyota RAV4?

Typically, a P0456 code does not directly impact the vehicle's performance, but unresolved issues with the evaporative emission system could potentially lead to other problems over time.

9. How much does it cost to fix a P0456 code on a 2013 Toyota RAV4?

The cost of repairing a P0456 code can vary depending on the exact cause of the issue, but it generally ranges from $100 to $500, including parts and labor.

10. How often does a P0456 code occur in a 2013 Toyota RAV4?

P0456 codes are relatively common in vehicles and can occur due to minor issues like a loose gas cap or more significant problems within the EVAP system. Regular maintenance and prompt repairs can help prevent the recurrence of this code.

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