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OBD Codes > Mini > p0442

Mini Information

DATSC provides free error code information for Mini vehicles and is provided free of charge.

Country & Continent of Origin: United Kingdom (Europe)

Evaporative Emission System Leak Detected (small leak)


You likely won't notice any drivability problems.


A code P0442 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) A small leak/hole in a fuel vapor hose/tube Other small leak in EVAP system


With a P0442, 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, or Inspect the EVAP system for cuts/holes in tubes/hoses Sources: Abo


This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a veh

Evaporative loss control system - Small leak (NAS Adv EVAPS only) Y D