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P0401 Diagnostic Trouble Code Discussion for February 2008

Insufficient EGR Flow Detected


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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
2004 Ford F-250 Super Duty King Ranch 6.0L No Start, Stall VIN: 1FTNW20P44
P0401: Insufficient EGR Flow Detected. ... from a dealer not running...cleared all codes after documenting them, i had a p2291 return. during cranking i had 100 psi max at icp...i replaced the high pressure oil pump and truck now will start after 20 sec of cranking...
February 01, 2008
2004 Ford F-250 Super Duty King Ranch 6.0L No Start, Stall VIN: 1FTNW20P44
P0401: Insufficient EGR Flow Detected. ... from a dealer not running...cleared all codes after documenting them, i had a p2291 return. during cranking i had 100 psi max at icp...i replaced the high pressure oil pump and truck now will start after 20 sec of cranking...
February 04, 2008
2005 Mitsubishi Lancer ES 2.0L MIL Lamp on VIN: JA3AJ26E75
P0401: Insufficient EGR Flow Detected. ... light on with no drivability concerns. Pulled DTC P0401 - EGR flow Insufficient. Did find a plugged vacuum hose to the EGR solenoid. Cleared & inspected all vacuum line and all clear and crack free. Pulled EGR valve and found it loaded up with carbon d...
February 05, 2008
2001 Chrysler PT Cruiser 2.4L MIL Lamp on VIN: 3C4FY4BB31
P0401: EGR System Malfunction. This is a regular customers' ride, so I don't want to start throwing parts at it without a bit more info. I'm just a bit confused on the code description since I haven't taken a PT Cruiser 101 class. I'm assuming since there is an "A" flow, there mus...
February 08, 2008
1999 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5272X
P0401: egr low flow. I'v run into a bit of a strange one. I have a Saturn SL2 with and egr 401 low flow code. Egr is new, no other codes. Egr can be controled with the tech2 but the map readings don't seem to change untill the egr reads 50%. The code is tested for during closed th...
February 15, 2008
2005 Mitsubishi Lancer ES 2.0L MIL Lamp on VIN: JA3AJ26E75
P0401: Insufficient EGR Flow Detected. ... light on with no drivability concerns. Pulled DTC P0401 - EGR flow Insufficient. Did find a plugged vacuum hose to the EGR solenoid. Cleared & inspected all vacuum line and all clear and crack free. Pulled EGR valve and found it loaded up with carbon d...
February 25, 2008
1999 Toyota Camry CE 2.2L MIL Lamp on VIN: 4T1BG22K8X
P0401: EGR System Insufficient Flow Detected. vechicle has low egr flow code. egr system is functioning. egr valve is operating, you can feel the diaphram rise when you give it fuel. also the passages are not plugged,when you apply vacuum at idle,the engine stalls. also checked for vacuum when driving as ...
February 27, 2008