P04B1

2017-10-10

Description:

  • Refueling Vapor Control Valve Circuit Low

Possible Symptoms:

  • Check and replace the fuel cap

  • Inspect and repair the wiring or connectors related to the refueling vapor control valve circuit

  • Clean or replace the refueling vapor control valve

  • Test and replace the fuel tank pressure sensor

Possible Causes:

  • Faulty refueling vapor control valve

  • Loose or damaged wiring or connectors in the refueling vapor control valve circuit

  • Malfunctioning fuel tank pressure sensor

  • Clogged or blocked charcoal canister

  • Damaged or leaking fuel filler cap

Related Parts:

Possible Solutions:

  • Check engine light illuminated on the dashboard

  • Difficulty starting the vehicle

  • Decreased fuel efficiency

  • Rough idle or stalling

  • Fuel odor present inside or outside the vehicle

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