P04B3

2017-10-10

Description:

  • Refueling Vapor Control Valve Stuck Performance/Stuck Open

Possible Symptoms:

  • Check the fuel cap: Ensure the fuel cap is tightly sealed, as it could be causing the issue.

  • Inspect the vapor control valve: Examine the valve for any signs of damage or blockage, and clean or replace it if necessary.

  • Check the EVAP system hoses: Inspect the hoses connected to the vapor control valve for leaks or cracks, and repair or replace them if found.

  • Check the EVAP canister: Inspect the canister for any damage or signs of contamination, and replace it if necessary.

  • Inspect the charcoal canister purge valve: Examine the purge valve for any faults or blockages, and clean or replace it if needed.

Possible Causes:

  • Defective or malfunctioning refueling vapor control valve

  • Clogged or blocked fuel vapor canister

  • Faulty or damaged fuel tank pressure sensor

  • Loose or damaged fuel cap

  • Issue with the evaporative emissions system hoses or lines

Related Parts:

Possible Solutions:

  • Difficulty starting the engine after refueling

  • Poor fuel efficiency

  • Check Engine Light (CEL) illumination

  • Fuel odor

  • Engine misfire or hesitation

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