P0455 Ford

Ford P0455 OBD-II Trouble Code Definition:

P0455 EVAP System Large Leak Detected

P0455 Ford OBD-II Trouble CodeDescription:

OBD Trouble Code P0455
Evaporative Emission System Leak Detected (large leak)
What does the code mean? OBD-ii Code P0455 definition:
This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle’s fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
Symptoms Sumptoms of OBD code P0455
You likely won’t notice any drivability problems.
Causes Causes of the OBD-II code P0455
A code p0455 most likely means one or more of the following has happened: A loose or improperly affixed gas cap A non-conforming gas cap (i.e. not factory/original brand) Other leak or damaged piece in EVAP system
Solutions With a p0455, the most common repair is to: Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back. Otherwise, replace the gas cap, and/or Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary
Related Codes P0440 P0441 P0442 P0443 P0446 P0453 P0456