Evaporative Emissions System: Diagrams

2012 Ford Fiesta L4-1.6LSECTION Diagrams



Evaporative Emission (EVAP) System Components - Exploded View

Evaporative Emission (EVAP) Canister Purge Valve










Evaporative Emission (EVAP) Canister

NOTE: Five door vehicle shown, four door vehicle similar.










Natural Vacuum Leak Detection Module










Evaporative Emission (EVAP) Fresh Air Hose

NOTE: The LH wheel liner must be positioned aside to access the fresh air hose.

NOTE: Press the release tab to disengage the fresh air hose from the fuel filler pipe bracket.









WARNING: Always disconnect the battery ground cable at the battery when working on an evaporative emission (EVAP) system or fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.

WARNING: Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.

NOTE: After installing an Evaporative Emission (EVAP) canister or Evaporative Emission (EVAP) canister purge valve, carry out the Evaporative Emission System Leak Test. For additional information, refer to Evaporative Emission System Leak Test Testing and Inspection.

1. Refer to the procedures and/or exploded views for any Warnings, Notices, Notes, Materials, Specifications, and Special Tools. Items in the exploded views may not be listed in order of removal.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.