2006 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE

DTC P2407: Notes

DTC P2407 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2407 EVAP system leak detection pump heater malfunction 
DETECTION CONDITION 
  • The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. When either of the following is detected 6 times  or more successively, the PCM determines EVAP system leak detection pump heater has a malfunction:
    • While obtaining the reference current value, the change in pump load current exceeds the specification.
    • After obtaining the reference current value, the pump load current is kept lower than the maximum pump load current for more than the specified time.

Diagnostic support note 

  • This is an intermittent monitor (CCM).
  • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA is available.
  • DTC is stored in PCM memory.
POSSIBLE CAUSE 
  • EVAP system leak detection pump heater malfunction
  • PCM malfunction
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