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P0400 Diagnostic Trouble Code Discussion for May 2008

Exhaust Gas Recirculation System Flow Malfunction

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Trouble Ticket Help Requests for DTC P0400
Help Request Posted
1998 Chevrolet Tracker 1.6L MIL Lamp on VIN: 2CNBJ1364W
P0400: egr excessive flow a. This tracker came in on friday for a po400 code egr flow excessive tested the valve with a vacuum pump , engine stalled at 4"hg. pressure transduce had a leak in it, replaced it also the egr solenoid valve was bad also replaced it, tested the egr diagnosti...
May 09, 2008
2000 Nissan Frontier XE 2.4L MIL Lamp on VIN: 1N6DD26S5Y
P0400: EGR System Recirculation Flow. dear group , and Jimmy N , PO400 is wearing me out, customer replace Valve and temp sensor with oem parts , I checked EGR backpressure transducer , as per somedata , it wouldnt hold vacume so we replaced it , oem of course.The EGR ports have been checked and d...
May 23, 2008