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P0401 Diagnostic Trouble Code Discussion for June 2006

Insufficient EGR Flow Detected

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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
2001 Mitsubishi Mirage ES 1.8L MIL Lamp on VIN: JA3AY26CX1
P0401: Insufficient EGR Flow Detected. customer returned for third time for po401 over a couple months of time.any problems with manifold pressure sensors or etc.thanks
June 01, 2006
1996 Toyota Camry DX 2.2L MIL Lamp on VIN: 41T1BG12K8
P0401: EGR System Insufficient Flow Detected. ... setting a p0401, EGR low flow. Car seems to run fine, and no other codes are present. All components seem ok and test ok, with one possible exception. Mitchell mentions an EGR temperature sensor, but I beleive that this is only fitted to CA cars although...
June 15, 2006
1999 Toyota Camry CE 2.2L MIL Lamp on VIN: JT2BG33K4X
P0401: EGR System Insufficient Flow Detected. All testing in stall show system is OK. We have ordered a VSV for vehicle due to loss of vacuume and leaks air on filter end under water. Valve is opening fully at 3" vacuume. MAP test OK on the high end of test. My interprtaion of stratigy is MAP reads in...
June 23, 2006
2001 Ford Escape XLT 3.0L MIL Lamp on VIN: 1FMYU04171
P0401: egr insufficient flow. Hello Ford Techs.I'm a GM fuel/electrical guy with a need for advise.This Ford has only a MIL complaint.Inspected all EGR hoses,lines and connections=all ok.This is a memory code.There is good vacuum at egr vacuum regulator supply,both hoses and ports on EGR D...
June 27, 2006
2004 Ford F-150 Heritage XL 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2FTRF17WX4
P0401: cyl 1 misfire. Bear with me ford techs. This is a real hair puller. Truck came in with multiple misfires, mostly on bank 1. Checked cat, and it was plugged almost totally. Replaced all cats on both sides with oem parts. After we got the truck back from the exhaust shop. I in...
June 28, 2006
1999 Ford Windstar SEL 3.8L egr flow insufficien VIN: 2FMDA5343X
P0401: insufficient egr flow. replaced pdfe sensor and cleared codes but ses light keeps coming back on for egr insufficient flow.what would you do next to fix the reoccuring problem of [...]
June 30, 2006