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P0401 Diagnostic Trouble Code Discussion for April 2009

Insufficient EGR Flow Detected

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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
1997 Ford E-150 Econoline 4.6L Poor Idle Quality, Surge, Stall VIN: 1FDEE1469V
P0401: fixed. ... codes, p0401 insufficient egr flow code & p0455 large evap leak code. tune-up, cleaned egr passages, fuel cap replaced made codes go away.now we have this maf code. according to mitchell this is a "memory" code ...
April 20, 2009
1997 Lexus LX450 4.5L MIL Lamp on VIN: JT6HJ88J1V
P0401: EGR System Insufficient Flow Detected. vehicle came in with mil on. pulled code po401 egr is working
April 20, 2009