DTC P1402: EGR Function: Description: Notes

WARNING: This page is about a different variant/trim than selected.

SYSTEM DESCRIPTION

Fig 1: System Description Chart

Courtesy of NISSAN MOTOR CO., U.S.A.

This system cuts and controls vacuum applied to the EGR valve to suit engine operating conditions. This cut-and-control operation is accomplished through the ECM and the EGRC-solenoid valve. When the ECM detects any of the following conditions, current through the solenoid valve is cut. This causes the vacuum to be cut. The EGR valve remains closed.

Low engine coolant temperature
Engine starting
High-speed engine operation
Engine idling
Excessively high engine coolant temperature
Mass air flow sensor malfunction

Fig 2: Identifying EGR And Vacuum System
Courtesy of NISSAN MOTOR CO., U.S.A.