× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0401 Diagnostic Trouble Code Discussion for December 2012

Insufficient EGR Flow Detected

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0401
Help Request Posted
2000 Honda Passport EX 3.2L Cuts out, Stall, MIL Lamp on VIN: 4S6CK58W1Y
P0401: Insufficient EGR System Flow Detected. the vehicle came in with a check engine light customer said had reduced power light on once in last 3 months did throttle sweep seems to be ok maf, map,o2, fuel trim, timing all ok, car runs fine know but has the intermittent reduced power
December 05, 2012
2004 Ford E-450 Super Duty 6.0L Lack of power VIN: 1FDXE45PX4
P0401: Insufficient EGR Flow Detected. Please help this ambulance has eaten my lunch and dinner!i have worked on many 7.3 fords with great succsess but this is a 6.0 when vehicle arrived it had no power and you could hear hissing noise like tubo leaking, found hose from turbo to cooler ruptured, go...
December 08, 2012
2002 Dodge Stratus SE 3.0L MIL Lamp on VIN: 4B3AG42HX2
P0401: EGR System Malfunction. have no signal vac from t-body.vac port is before t-plate.port is not restricted.before removing t-body,while custumer always waits,has anyone run in to this before. there is zero vac from this port at any load or speed. thanks for your time. Greg
December 11, 2012
2001 Honda Civic EX 1.7L MIL Lamp on VIN: 1HGES25791
P0401: EGR System Insufficient Flow Detected. ... that came in with MIL light on, rattle, and running poorly. Found codes P1361 AND P1362 for top dead center sensor noise/no signal. Replaced cylinder head with reman unit and installed new cam sensor per Honda TSB 01-083 for the excessive camshaft end play...
December 11, 2012
2007 Mercedes-Benz R320 CDI 3.0L MIL Lamp on VIN: 4JGCB22E07
P0401: EGR Insufficient Flow. P0401 was recorded and cleared 2 weeks ago. At that time we used the scan tool to operate the EGR valve and the engine stumbled but did not die. Vehicle is back with the same code and this time we removed the EGR valve and check the valve and passages. It was ...
December 11, 2012
1997 Toyota RAV4 2.0L MIL Lamp on VIN: JT3HP10V9V
P0401: EGR System Insufficient Flow Detected. Greetings! Feel like a real rookie here, but... Testing VSV for EGR by grounding EGR terminal on ECM connector has no effect - before condemning I'l like to remove it and check it on the bench. Problem - I can't even feel it reaching down behind the engine, ne...
December 12, 2012