DTC P2407: Notes

DTC P2407 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2407	EVAP system leak detection pump sensor circuit intermittent
DETECTION CONDITION	The PCM monitors pump load current (EVAP line pressure), while EVAP leak monitor is operating. When either of the following is detected 6 times or more successively, the PCM determines EVAP system leak detection pump heater has a malfunction: While 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 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.
POSSIBLE CAUSE	EVAP system leak detection pump heater malfunction PCM malfunction

DTC P2407

EVAP system leak detection pump sensor circuit intermittent

DETECTION CONDITION

The PCM monitors pump load current (EVAP line pressure), while EVAP leak monitor is operating. When either of the following is detected 6 times or more successively, the PCM determines EVAP system leak detection pump heater has a malfunction:
- While 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 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.

POSSIBLE CAUSE