DTC P2401: Notes
DTC P2401 DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P2401 |
EVAP system leak detection pump motor circuit low |
| DETECTION CONDITION |
- The PCM monitors pump load current (EVAP line pressure), while EVAP leak monitor is operating. If the pump load current is lower than specified, the PCM determines EVAP system leak detection pump motor circuit has a malfunction.
Diagnostic support note
- This is a intermittent monitor (CCM).
- MIL illuminates if PCM detects above malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for the same malfunction has been stored in PCM.
- PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
- FREEZE FRAME DATA is available.
- DTC is stored in PCM memory.
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| POSSIBLE CAUSE |
- EVAP system leak detection pump malfunction
- Open circuit between main relay terminal E and EVAP system leak detection pump terminal A
- Open circuit between EVAP system leak detection pump terminal D and PCM terminal 1U
- Short to ground circuit between EVAP system leak detection pump terminal D and PCM terminal 1U
- Poor connection at EVAP system leak detection pump or PCM connector
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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