P04B2

2017-10-10

Description:

  • Refueling Vapor Control Valve Circuit High

Possible Symptoms:

  • Check the fuel cap: Ensure that the fuel cap is properly tightened or replace it if it is damaged.

  • Inspect the wiring and connectors: Examine the wiring and connectors related to the refueling vapor control valve circuit for any loose connections or damage.

  • Test the refueling vapor control valve: Use a multimeter to test the functionality of the refueling vapor control valve and replace it if necessary.

  • Check the charcoal canister: Inspect the charcoal canister for any signs of damage or clogging, and clean or replace it if needed.

  • Inspect the fuel tank: Check the fuel tank for any leaks or damage that may be affecting the refueling vapor control valve circuit.

Possible Causes:

  • Faulty refueling vapor control valve

  • Loose or damaged electrical connection to the refueling vapor control valve

  • Faulty powertrain control module (PCM)

  • Blocked or restricted vapor canister

  • Faulty fuel tank pressure sensor

Related Parts:

Possible Solutions:

  • Check engine light illuminates on the dashboard

  • Vehicle may fail emissions test

  • Decreased fuel efficiency

  • Difficulty starting the engine

  • Rough idling or engine stalling

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