how to fix P0455 code in Ford F-150 12th Generation (2009-2014)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the vehicle battery to ensure safety.

Tools Required:

• OBD-II scanner
• Smoke machine
• Socket set
• Screwdrivers
• Torque wrench

2. Inspect and Replace the Gas Cap

• Remove the gas cap and inspect for damage.
• If damaged, replace with a new gas cap designed for the Ford F-150.
• Tighten the new gas cap until it clicks to ensure a proper seal.

3. Inspect EVAP Hoses and Connections

• Visually inspect all EVAP hoses and connections for any visible damage or disconnections.
• Replace any damaged hoses with OEM or equivalent components.
• Reconnect any hoses that may have come loose.

4. Perform Smoke Test

• Connect the smoke machine to the EVAP service port.
• Activate the smoke machine to introduce smoke into the system.
• Observe for smoke escaping from any cracks or leaks in the system.
• Seal any identified leaks with appropriate repairs, such as replacing components or using sealant.

5. Check and Replace the EVAP Purge Valve

• Locate the EVAP purge valve (usually found near the intake manifold).
• Disconnect the electrical connector and vacuum line from the valve.
• Test the valve operation by applying voltage to it; it should open when powered.
• If the valve is faulty, replace it with a new OEM valve and reconnect the lines.

6. Check the Charcoal Canister

• Inspect the charcoal canister for cracks or blockages.
• If damaged, replace the charcoal canister with an OEM part.
• Ensure all connections to the canister are secure.