AutoCodes – Toyota – P1455 2006 Toyota Prius

P1455 2006 Toyota Prius Code - Vapor Reducing Fuel Tank System Malfunction

Quick Answer

The Engine Control Module (ECM) detects leakage of evaporative emissions from the bladder membrane by using the heated oxygen sensor and pressure switching valve. Common causes include EVAP system large leak detected, Hose and pipe for EVAP system (broken or loose), Fuel system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1455 2006 Toyota Prius indicates Vapor Reducing Fuel Tank System Malfunction.
Common causes: Common causes include EVAP system large leak detected, Hose and pipe for EVAP system (broken or loose), Fuel system.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,571

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1455 2006 Toyota Prius Description

The Engine Control Module (ECM) detects leakage of evaporative emissions from the bladder membrane by using the heated oxygen sensor and pressure switching valve. By opening the purge VSV and then closing the pressure switching valve, air in the outer tank is drawn into the intake manifold. The ECM checks concentration of hydrocarbon (HC) molecules in the air drawn from the bladder membrane area. Also, the ECM checks the sensor output before and after closing the pressure switching valve. If there is a change in the HC concentration when the pressure switching valve is opened or closed, the ECM will conclude that the bladder membrane is leaking.

OBDII Code P1455 2006 Toyota Prius - Vapor Reducing Fuel Tank System Malfunction - AutoCodes.com — P1455 2006 Toyota Prius Code - Vapor Reducing Fuel Tank System Malfunction

What does this mean?

What are the Possible Causes of the DTC P1455 2006 Toyota Prius?

EVAP system large leak detected
Hose and pipe for EVAP system (broken or loose)
Fuel system
Faulty Engine Control Module (ECM)

How to Fix the DTC P1455 2006 Toyota Prius?

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 P1455 2006 Toyota Prius 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 P1455 2006 Toyota Prius code?

Need more information on how to fix the P1455 2006 Toyota Prius code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1455 2006 Toyota Prius code diagnosed by a professional: Find a repair shop in your area

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 P1455 2006 Toyota Prius Code

1. What are common symptoms of OBDII code P1455 in a 2006 Toyota Prius?

- Common symptoms include the check engine light coming on, decreased fuel efficiency, and potential fuel odor.

2. What does OBDII code P1455 indicate in a 2006 Toyota Prius?

- OBDII code P1455 indicates a Vapor Reducing Fuel Tank System malfunction.

3. What are potential causes of OBDII code P1455 in a 2006 Toyota Prius?

- Potential causes include a loose or damaged gas cap, a malfunctioning vapor pressure sensor, or issues with the fuel tank pressure control valve.

4. How can I diagnose the source of OBDII code P1455 in my 2006 Toyota Prius?

- You can start by checking the gas cap for tightness and damage, inspecting the vapor pressure sensor for any issues, and testing the fuel tank pressure control valve for proper function.

5. Can I still drive my 2006 Toyota Prius with OBDII code P1455?

- It is generally safe to drive your Prius with this code, but it is recommended to have it diagnosed and repaired as soon as possible to prevent further issues.

6. How can I reset OBDII code P1455 in my 2006 Toyota Prius?

- You can reset the code using an OBDII scanner or by disconnecting the car's battery for a few minutes. However, the code may return if the underlying issue is not fixed.

7. Is it safe to ignore OBDII code P1455 in my 2006 Toyota Prius?

- Ignoring the code can lead to decreased fuel efficiency and potential emissions issues. It is best to address the problem promptly to maintain the vehicle's performance.

8. What are some repair tips for fixing OBDII code P1455 in a 2006 Toyota Prius?

- Begin by checking and tightening the gas cap, then inspect the vapor pressure sensor and fuel tank pressure control valve for any faults. Replace any damaged components as needed.

9. How much does it typically cost to repair OBDII code P1455 in a 2006 Toyota Prius?

- The cost of repairs can vary depending on the exact cause of the issue and labor rates in your area. It is advisable to consult a mechanic for a proper diagnosis and cost estimate.

10. Can a DIY enthusiast fix OBDII code P1455 in a 2006 Toyota Prius?

- While some aspects of the repair may be DIY-friendly, it is recommended to have a professional mechanic diagnose and repair the issue to ensure it is properly resolved.