× 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 June 2016

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
1999 Toyota Camry CE 2.2L Excessive Emissions, MIL Lamp on VIN: 4T1BG22K1X
P0401: EGR System Insufficient Flow Detected. ... vehicle. This P0401 codes comes back within a day. The vehicle is due for inspection. If I push up on the diaphragm on the EGR valve the engine will stall straight away. If I pull vacuum on the EGR the engine will stall straight away. With the car in drive...
June 21, 2016