× 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
Re: 1999 Navistar bus
Posted to Technical Tips Forum on 3/21/2000

[...trimmed text...]

Hi Aleks!

Try performing flash code retrieval by holding in the "diagnostic button" while turning the key on. The engine will flash codes with the orange and red indicator lamps. The orange flashes ... Login to read more.