CAR OBD CODES

P0442 OBD Code Definition:
P0442 EVAP Control System Leak Detected Small Leak
P0442 OBD Code Description:

OBD2 Code P0442 Definition:
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 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

Possible sumptoms of P0442
You likely won’t notice any drivability problems. Possible Causes

Possible causes of P0442
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 Faulty vent o-ring seal Possible Solutions

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: about.com OBD-II Codes

P0440 P0441 P0443 P0446 P0453 P0455 P0456
Note: The information on the P0442 error code is purely informative, if you need more useful information, please consult your technician.