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P0401 Diagnostic Trouble Code Discussion for March 2013

Insufficient EGR Flow Detected

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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
2011 Volkswagen Jetta TDI 2.0L MIL Lamp on VIN: 3VWLL7AJXB
P0401: EGR insufficient flow detected. Sorry I do not have testing results on hand for fuel preasure and tail pipe readings but all was within tolerance. EGR valve fuctions and is not binding/sticking. Exhaust flow seems to be good. fuel milage is in low to mid 40's. engine power is excellent. The ...
March 06, 2013
2004 Chrysler Pacifica 3.5L MIL Lamp on VIN: 2C8GF68494
P0401: EGR System Performance. Hi everyone, I am replacing the EGR valve on this vehicle because check engine light is on and has bad position sensor in EGR valve, when I did the flow test with the old valve the engine would stall, now with the new valve it does not do that anymore, the val...
March 07, 2013
2001 Toyota Camry LE 2.2L MIL Lamp on VIN: JT2BG22K61
P0401: EGR System Insufficient Flow Detected. ... on, code p0401 insuffecient egr flow. We check hoses, solenoid, trancducer, egr valve and found all to be working. The valve gets about 2.5 in vaccum while driving. We checked for restriction jin ports and when applied vacuum engine stumbles and stalls. No...
March 13, 2013