Detection Condition
WARNING: This page is about a different car, the 2002 Mazda B4000, 2002 Mazda B3000, and 2002 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0442 indicates a leak has been detected as small as 0.04" (1 mm) in EVAP canister purge valve solenoid system. There is less than 2.5 in. H2O (0.625 kPa) bleed-up over 15 seconds at 75 percent fuel fill. Bleed-up and evaluation time vary as a function of fuel fill level. Vapor generation limit is more than 2.5 in. H2O (0.625 kPa) over 120 seconds.