× 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

P1408 Diagnostic Trouble Code Discussion for May 2012

Manifold Absolute Pressure Sensor Signal Performance

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 P1408
Help Request Posted
2003 Ford F-150 King Ranch 5.4L MIL Lamp on VIN: 1FTRW07L83
P1408: EGR low flow during KOER test. Came in for a mil light on. Code P0401 stored. Had no KOER codes. I have made sure everything is clean in the way of passages. Tried a factory DPFE and apply sol. It has 20 inches of vac. at sol. but will only apply 2 inches of vacume to egr valve during KOE...
May 03, 2012