P0455 2003 Ford F150 Code - Evaporative Emission Control System Leak Detected Gross Leak
Quick Answer
Vehicles that meet enhanced evaporative requirements utilize a vacuum-based evaporative system integrity check. 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 2003 Ford F150 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.
Code P0455 2003 Ford F150 Description
The Diagnostic Trouble Code (DTC) will set when the EVAP control system has a very large leak such as the fuel filler cap fell off, the EVAP control system does not operate properly.
What are the Possible Causes of the DTC P0455 2003 Ford F150?
- 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 2003 Ford F150?
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
The PCM monitors the complete EVAP control system for no purge flow, the presence of a large fuel vapor leak, or multiple small fuel vapor leaks. The system failure occurs when no purge flow (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).
There is a factory service bulletin for the 2003 Ford F-150:
2003 Ford F-150 Factory Service Bulletin OBDII Code P0455
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0455 2003 Ford F150 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 2003 Ford F150 code?
Need more information on how to fix the P0455 2003 Ford F150 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0455 2003 Ford F150 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0455 2003 Ford F150 Code
1. What does the OBDII code P0455 for a 2003 Ford F150 indicate?
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 2003 Ford F150?
Common symptoms may include the check engine light coming on, a strong fuel odor near the vehicle, and potential issues with fuel efficiency.
3. What are some possible causes of a P0455 code in a 2003 Ford F150?
Potential causes include a loose or damaged gas cap, a leak in the fuel tank or fuel lines, a faulty evaporative emission control system pressure sensor, or a cracked vacuum hose.
4. How serious is a P0455 code in a 2003 Ford F150?
While the vehicle may still be driveable with this code, it is important to address it promptly to prevent potential fuel leaks or emissions issues.
5. How can I diagnose a P0455 code in my 2003 Ford F150?
Diagnosing a P0455 code may involve visually inspecting the fuel cap and related components, performing a smoke test to identify leaks, and using a scan tool to monitor system parameters.
6. Can I repair a P0455 code in my 2003 Ford F150 myself?
Depending on the cause of the code, you may be able to address it yourself by tightening or replacing the gas cap, repairing a damaged hose, or replacing a faulty sensor. However, more complex issues may require professional diagnosis and repair.
7. Are there any specific repair tips for fixing a P0455 code in a 2003 Ford F150?
When addressing a P0455 code, start by checking and tightening the gas cap. If the issue persists, inspect the fuel system components for leaks and test the evaporative emission control system components for proper operation.
8. How much does it typically cost to repair a P0455 code in a 2003 Ford F150?
The cost of repairing a P0455 code can vary depending on the cause of the issue and whether you perform the repairs yourself or take the vehicle to a mechanic. Costs may range from a simple gas cap replacement to more extensive repairs.
9. Can a P0455 code in a 2003 Ford F150 cause emissions test failure?
Yes, a P0455 code can cause emissions test failure due to the vehicle's evaporative emission control system not functioning properly. It is important to address the code before attempting an emissions test.
10. How long can I safely drive with a P0455 code in my 2003 Ford F150?
It is recommended not to ignore a P0455 code for an extended period, as it can lead to fuel leaks and emissions issues. It is best to address the code as soon as possible to prevent further problems.
Discuss the causes and fixes for P0455 2003 Ford F150 OBDII Code
Code P0455 2003 Ford F150 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
