DTC P2405: EVAP System Leak Detection Pump Sense Circuit Low

Fig 1: DTC P2405 Detection Condition & Possible Causes Chart

Courtesy of MAZDA MOTORS CORP.

Diagnostic Procedure 

Fig 2: DTC P2405 Diagnostic Procedure Chart (Step 1-3)

Courtesy of MAZDA MOTORS CORP.

Fig 3: DTC P2405 Diagnostic Procedure Chart (Step 4-5)

Courtesy of MAZDA MOTORS CORP.