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P0401 Diagnostic Trouble Code Discussion for February 2006

Insufficient EGR Flow Detected

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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
1998 Isuzu Rodeo LS 3.2L Cuts out, Stall, MIL Lamp on VIN: 4S2CM58W9W
P0401: Insufficient EGR System Flow Detected. ... read this. I have a rodeo thatís giving me a hard time; it came into my shop with the check engine light on and two codes stored, p0401 and p0101. Of course the truck runs like a champ whenever Iím looking at it. I down loaded the diagnostic charts from th...
February 10, 2006
2002 Toyota Camry SE 2.4L MIL Lamp on VIN: JT2BG22K61
P0401: EGR System Insufficient Flow Detected. check engine lights on. cleaned egr tube (not clogged) engine stumbles when valve opened on idle. checked vacuum hoses (ok) tested at engine speeds (works good) this has been happening for the last 25000 miles services and i reset 3 times. no ideas! help
February 17, 2006