DTC P2407: Notes

DTC P2407 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2407	EVAP system leak detection pump sense circuit intermittent
DETECTION CONDITION	The PCM monitors the pump load current (EVAP line pressure) when the EVAP leak monitor is operating. When either of the following is detected 6 times or more successively, the PCM determines that the EVAP system leak detection pump heater has a malfunction: When obtaining the reference current value, the change in pump load current exceeds the specification. After obtaining the reference current value, the pump load current is kept lower than the maximum pump load current for more than the specified time. 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.
POSSIBLE CAUSE	EVAP system leak detection pump heater malfunction PCM malfunction

DTC P2407

EVAP system leak detection pump sense circuit intermittent

DETECTION CONDITION

The PCM monitors the pump load current (EVAP line pressure) when the EVAP leak monitor is operating. When either of the following is detected 6 times or more successively, the PCM determines that the EVAP system leak detection pump heater has a malfunction:
- When obtaining the reference current value, the change in pump load current exceeds the specification.
- After obtaining the reference current value, the pump load current is kept lower than the maximum pump load current for more than the specified time.

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.

POSSIBLE CAUSE