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DTC P2401: Notes

DTC P2401 [L3 WITH TC] DETECTION CONDITION AND POSSIBLE CAUSE

DTC P2401 EVAP system leak detection pump motor circuit low
DETECTION CONDITION 
  • The PCM monitors the pump load current (EVAP line pressure), while the EVAP leak monitor is operating. If the pump load current is lower than specified, the PCM determines that the EVAP system leak detection pump motor circuit has a malfunction.

Diagnostic support note 
  • This is a intermittent monitor (CCM).
  • 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.
  • DTCs are stored in PCM memory.
POSSIBLE CAUSE 
  • EVAP system leak detection pump malfunction
  • Open circuit between main relay and EVAP system leak detection pump terminal A
  • Open circuit between EVAP system leak detection pump terminal D and PCM terminal 1 AS
  • Short to ground circuit between EVAP system leak detection pump terminal D and PCM terminal 1 AS
  • Poor connection at the EVAP system leak detection pump or the PCM connector
  • PCM malfunction
G04954418Courtesy of MAZDA MOTORS CORP.
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