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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2287 (Engine Control System - DTCS P1211 Through P2A03) >> DTC P1402 EGR Function >> On Board Diagnosis Logic

On Board Diagnosis Logic

WARNING: This page is about a different car, the 2008 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

If the EGR temperature sensor detects EGR flow under the condition that does not call for EGR, a high-flow malfunction is diagnosed.

DTC DETECTING CONDITION AND POSSIBLE CAUSE

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1402
1402
EGR function (Open) EGR flow is detected under the condition that does not call for EGR.
  • Harness or connectors (The EGR volume control valve circuit is open or shorted.)
  • EGR volume control valve leaking or stuck open
  • EGR temperature sensor