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P0400 Diagnostic Trouble Code Discussion for November 2006

Exhaust Gas Recirculation System Flow Malfunction

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Trouble Ticket Help Requests for DTC P0400
Help Request Posted
1997 Infiniti I30 3.0L MIL Lamp on VIN: JNKCA21D6V
P0400: EGR System Recirculation Flow. Greetings,Im working on this infinitys egr system.I checked egr temp sensor and that is good.I did checkto see if I have vaccum at the egr valve between 2000 and 40000 rpms and that is good.My question to you techs is this I put direct vaccum to the valve and ...
November 14, 2006
1998 Mercedes-Benz ML320 3.2L MIL Lamp on VIN: 4JGAB54E1W
P0400: egr flow. It looks like the pipe is clogged from the egr to intake. Do I have to remove the intake to clean or replace it? TIA.
November 15, 2006