DTC P2404: EVAP System Leak Detection Pump Control Circuit Low

Fig 1: DTC P2404 Detection Condition & Possible Causes Chart

Courtesy of MAZDA MOTORS CORP.

Diagnostic Procedure 

Fig 2: DTC P2404 Diagnostic Procedure Chart (Step 1-3)

Courtesy of MAZDA MOTORS CORP.

Fig 3: DTC P2404 Diagnostic Procedure Chart (Step 4-6)

Courtesy of MAZDA MOTORS CORP.