P0455 1997 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 1997 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 1997 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 1997 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 1997 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 1997 Ford F-150:
1997 Ford F-150 Factory Service Bulletin OBDII Code P0455
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0455 1997 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 1997 Ford F150 code?
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Frequently Asked Questions about P0455 1997 Ford F150 Code
1. What does the OBDII code P0455 on a 1997 Ford F150 mean?
- The code P0455 indicates that the Evaporative Emission Control System has detected a gross leak.
2. What are common symptoms of a P0455 code on a 1997 Ford F150?
- Common symptoms may include a strong fuel odor, the Check Engine Light coming on, and potentially poor fuel economy.
3. What are some possible causes of a P0455 code on a 1997 Ford F150?
- Causes may include a loose gas cap, a damaged or cracked fuel filler neck, a faulty EVAP system purge valve, or a leak in the EVAP system hoses.
4. How serious is a P0455 code on a 1997 Ford F150?
- While the vehicle may still be drivable with a P0455 code, it is important to address the issue promptly to prevent potential fuel leaks or harm to the environment.
5. How can I diagnose a P0455 code on my 1997 Ford F150?
- Diagnosing a P0455 code typically involves checking the gas cap for tightness, inspecting the EVAP system components for damage, and using a smoke machine to detect leaks.
6. Can I still drive my 1997 Ford F150 with a P0455 code?
- While you may be able to drive the vehicle with a P0455 code, it is recommended to address the issue as soon as possible to prevent any potential safety or environmental hazards.
7. How do I repair a P0455 code on a 1997 Ford F150?
- Repairing a P0455 code may involve tightening or replacing the gas cap, repairing or replacing damaged components in the EVAP system, and clearing the code with a diagnostic tool.
8. Will a P0455 code on a 1997 Ford F150 affect fuel efficiency?
- Yes, a P0455 code can potentially lead to decreased fuel efficiency due to fuel vapors escaping from the EVAP system.
9. Are there any DIY tips for fixing a P0455 code on a 1997 Ford F150?
- DIY tips may include checking and tightening the gas cap, visually inspecting the EVAP system components for damage, and ensuring all connections are secure.
10. How much does it typically cost to repair a P0455 code on a 1997 Ford F150?
- The cost of repairing a P0455 code can vary depending on the specific issue, but it may range from a simple fix like tightening the gas cap to more involved repairs that could cost a few hundred dollars.
Discuss the causes and fixes for P0455 1997 Ford F150 OBDII Code
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What parts should I buy or look at to find the leak? I found a diagram for the system and believe its one of the hoses? I saw a youtube about a smoke test and a non-smoke test method to find leaks.. any other advice on this?
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Unless you can identify which hose is leaking, a smoke test is prudent.
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