AutoCodes – Scion – P0455 2006 Scion xB

P0455 2006 Scion xB 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 2006 Scion xB 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 5,411

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 2006 Scion xB 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 2006 Scion xB - EVAP System Gross Leak Detected - AutoCodes.com — P0455 2006 Scion xB Code - EVAP System Gross Leak Detected

What does this mean?

What are the Possible Causes of the DTC P0455 2006 Scion xB?

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 2006 Scion xB?

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 tighten the gas cap and clearing the code. In most cases the code can be clear by disconnecting the car battery for about 30 minutes.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0455 2006 Scion xB 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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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 2006 Scion xB Code

1. What does OBDII code P0455 mean for a 2006 Scion xB?

The code P0455 on a 2006 Scion xB indicates an EVAP system gross leak detected.

2. What are the common symptoms of OBDII code P0455 in a 2006 Scion xB?

Common symptoms of P0455 may include a strong fuel odor, check engine light illumination, and possible issues with passing emissions tests.

3. What are the possible causes of OBDII code P0455 in a 2006 Scion xB?

Potential causes of P0455 in a 2006 Scion xB include a loose or damaged gas cap, a leak in the EVAP system hoses, a faulty EVAP canister, or a malfunctioning purge valve.

4. How serious is OBDII code P0455 in a 2006 Scion xB?

While P0455 is not an immediate threat to the vehicle's drivability, it should be addressed promptly to prevent potential issues with fuel economy and emissions compliance.

5. How can I diagnose OBDII code P0455 in a 2006 Scion xB?

Diagnosing P0455 typically involves inspecting the gas cap for tightness, visually checking the EVAP system components for damage, and using a smoke machine to detect leaks.

6. What are some repair tips for fixing OBDII code P0455 in a 2006 Scion xB?

Repair tips for P0455 may include tightening or replacing the gas cap, repairing or replacing damaged hoses, replacing the EVAP canister or purge valve if faulty, and clearing the code to see if it returns.

7. Can I drive my 2006 Scion xB with OBDII code P0455?

It is generally safe to drive your Scion xB with a P0455 code, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent potential issues down the road.

8. How much does it cost to fix OBDII code P0455 in a 2006 Scion xB?

The cost of fixing P0455 in a 2006 Scion xB can vary depending on the specific issue causing the code, but it may range from a simple gas cap replacement to more extensive repairs involving EVAP system components.

9. Will OBDII code P0455 in a 2006 Scion xB affect fuel economy?

Yes, if left unresolved, P0455 can potentially impact fuel economy as it may lead to fuel vapors escaping from the EVAP system, causing inefficiencies in the fuel system.

10. How often does OBDII code P0455 reoccur in a 2006 Scion xB after repair?

If the underlying issue causing P0455 is properly diagnosed and repaired, the code should not reoccur in a 2006 Scion xB. Regular maintenance and checks of the EVAP system can help prevent its recurrence.