DTC P0442: EVAP System Leak Detected (Small Leak)

Fig 1: DTC P0442 Detection Condition & Possible Causes Chart

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Diagnostic Procedure 

Fig 2: DTC P0442 Diagnostic Procedure Chart (Step 1-6)

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Fig 3: DTC P0442 Diagnostic Procedure Chart (Step 7-11)

Courtesy of MAZDA MOTORS CORP.