DTC P2401: Notes
DTC P2401 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P2401 |
EVAP system leak detection pump control circuit low |
| DETECTION CONDITION |
- The PCM monitors the pump load current (EVAP line pressure) when 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 an 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.
- DTC is stored in the PCM memory.
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| POSSIBLE CAUSE |
- EVAP system leak detection pump malfunction
- Connector or terminal malfunction
- Open circuit between main relay terminal C and EVAP system leak detection pump terminal A
- Short to ground circuit between the EVAP system leak detection pump terminal D and PCM terminal 1Y
- Open circuit between EVAP system leak detection pump terminal D and PCM terminal 1Y
- PCM malfunction
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