AutoCodes – Ford – P0455 2008 Ford Fusion

P0455 2008 Ford Fusion Code - Evaporative Emission Control System Leak Detected Gross Leak

Quick Answer

The Powertrain Control Module (PCM) monitors the complete evaporative emission (EVAP) control system for no purge flow, the presence of a large fuel vapor leak, or multiple small fuel vapor leaks. 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 2008 Ford Fusion indicates Evaporative Emission Control System Leak Detected Gross Leak.
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 8,856

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 2008 Ford Fusion Description

The Powertrain Control Module (PCM) monitors the complete evaporative emission (EVAP) control system for no purge flow, the presence of a large fuel vapor leak, or multiple small fuel vapor leaks. System failure occurs when no purge flow, which is attributed to fuel vapor blockages or restrictions, a large fuel vapor leak, or multiple fuel vapor leaks are detected by the EVAP running loss monitor test with the engine running, but not at idle.

OBDII Code P0455 2008 Ford Fusion - Evaporative Emission Control System Leak Detected Gross Leak - AutoCodes.com — P0455 2008 Ford Fusion Code - Evaporative Emission Control System Leak Detected Gross Leak

What does this mean?

What are the Possible Causes of the DTC P0455 2008 Ford Fusion?

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 2008 Ford Fusion?

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 2008 Ford Fusion 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 2008 Ford Fusion code?

Need more information on how to fix the P0455 2008 Ford Fusion 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 2008 Ford Fusion Code

1. What does the OBDII code P0455 mean for a 2008 Ford Fusion?

- The code P0455 indicates that the Evaporative Emission Control System has detected a gross leak.

2. What are the common symptoms of a P0455 code in a 2008 Ford Fusion?

- Common symptoms include the check engine light coming on, a fuel smell near the vehicle, and decreased fuel efficiency.

3. What are some possible causes of a P0455 code in a 2008 Ford Fusion?

- Potential causes include a loose or damaged gas cap, a leak in the evaporative emission system hoses, a faulty purge valve, or a cracked charcoal canister.

4. How can I diagnose a P0455 code in my 2008 Ford Fusion?

- You can start by checking the gas cap for tightness and condition, inspecting the EVAP system hoses for leaks, testing the purge valve for proper operation, and examining the charcoal canister for cracks.

5. Can a P0455 code in a 2008 Ford Fusion cause any other issues besides the check engine light?

- While the code itself may not directly cause drivability issues, ignoring it can lead to increased emissions, decreased fuel economy, and potential long-term damage to the vehicle's emission system components.

6. How can I repair a P0455 code in my 2008 Ford Fusion?

- Depending on the cause, you may need to tighten or replace the gas cap, repair or replace damaged hoses, replace a faulty purge valve, or replace a cracked charcoal canister.

7. Is it safe to continue driving a 2008 Ford Fusion with a P0455 code?

- It is generally safe to drive the vehicle with a P0455 code, but it is recommended to have it diagnosed and repaired as soon as possible to prevent further issues and ensure optimal vehicle performance.

8. Can I reset the check engine light after fixing a P0455 code in my 2008 Ford Fusion?

- Yes, you can reset the check engine light using an OBDII scanner after fixing the underlying issue causing the P0455 code.

9. How much does it typically cost to repair a P0455 code in a 2008 Ford Fusion?

- The cost of repair can vary depending on the specific cause of the code, but it may range from $100 for a simple fix like a gas cap replacement to several hundred dollars for more complex repairs involving components like the charcoal canister.

10. How often does a P0455 code reappear in a 2008 Ford Fusion after repair?

- If the underlying issue causing the code is properly addressed and repaired, the P0455 code should not reappear. Regular maintenance and inspections can help prevent future occurrences.