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P0401 Diagnostic Trouble Code Discussion for January 2010

Insufficient EGR Flow Detected

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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
1999 Honda Passport EX 3.2L MIL Lamp on VIN: 4S6CM58W4X
P0401: Insufficient EGR System Flow Detected. hey guys i have this truck at my shop customer had a new egr and map sensoe install i dont know if he install or anothere shop customer tells me truck sad around for 2 years truck runs great after about a mile check engine light comes on same code po401 could ...
January 10, 2010
1999 Ford Ranger XLT 2.5L MIL Lamp on VIN: 1FTYR10C3X
P0401: egr flow insuuicient. this ranger came in with a very bad exhaust leak and 3 codes 1506,1400, and 0401. fixed exhaust cleared code and got only code 1506. replaced iac and still get code 1506. truck seems to idle high but no other driveability problems. not sure where to go next.
January 11, 2010