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P0400 Diagnostic Trouble Code Discussion for December 2012

Exhaust Gas Recirculation System Flow Malfunction

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Trouble Ticket Help Requests for DTC P0400
Help Request Posted
2001 Nissan Frontier XE 2.4L MIL Lamp on VIN: 1N6DD21SX1
P0400: Egr circl flow concern. After much time spent on this concern we still have the Po400 code and also had a p1402 last time it came back which we believe was aresult of the wrong egr solenoid being installed on truck.We have since put on an OEM ssolenoid. If we apply vac to egr it does...
December 12, 2012
1997 Geo Tracker 1.6L Code VIN: 2CNBE1865V
P0400: EGR System Performance. Thanks for your help. I have a intermittent egr failure on this. about two weeks then it comes back. I have tested system completely and egr test pass most of the time however every know and then it fails.
December 26, 2012