DTC P2401: Notes
DTC P2401 DETECTION & CONDITION 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 evaporative leak monitor is operating. If the pump load current is less than the specification, the PCM determines that the EVAP system leak detection pump control circuit voltage is low.
Diagnostic support note
- This is an intermittent monitor (EVAP system).
- 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.
- The 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 in wiring harness between main relay terminal C and EVAP system leak detection pump terminal A
- Short to ground in wiring harness between main relay terminal C and EVAP system leak detection pump terminal A
- Open circuit in wiring harness between EVAP system leak detection pump terminal D and PCM terminal 4D
- Short to ground in wiring harness between EVAP system leak detection pump terminal D and PCM terminal 4D
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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