× 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 February 2015

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
2005 Hyundai Santa Fe GLS 3.5L Poor Idle Quality, MIL Lamp on VIN: KM8SC13E55
P0401: EGR System - Insufficient Flow Detected. With the vacuum line connected to the EGR valve, the valve will stay wide open all the time. This setup has a line coming off the throttle body with manifold vacuum which connects to a 'tee". One line tees off directly to the EGR valve, the other tees off ...
February 13, 2015