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P0442 - Evaporative Emission Control System Leak Detected (small leak)
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: You likely won't notice any drivability problems.
Causes: 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
P0445 - Evaporative Emission Control System Purge Control Valve Circuit Shorted. Possible Solutions: with a P0445, the most common repair is to:
* Bad or loss contact wires
* Check harnesses, replace it
Hi..my name is Keith..and the error code P0442 means...Evaporative emission control system,small leak detected ...and error code P0445 means....Evaporative emission control system,short in purge control valve circuit..i hope this has helped
hello po442 ,po455,po456 is leak detected possible, check the gas cap , basicaly you have a leak that is larger than 0.020' and smaller than 0.040' in the gas evaporative system use your nose to find this one thanks