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 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.
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| 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 3Y
- Short to ground circuit between EVAP system leak detection pump terminal D and PCM terminal 3Y
- Poor connection at the EVAP system leak detection pump or the PCM connector
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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