Diesel Laptops has categorized over 70,000 diagnostic troubleshooting codes (DTCs) for commercial trucks. It covers everything from a Ford diesel to a commercial truck. The free version gives you quick repair information, and you can also upgrade to a paid version to obtain step-by-step repair information, wiring diagrams, component locators, and much more.
Website: http://www.truckfaultcodes.com/
Apple iTunes: https://apps.apple.com/us/app/truckfaultcodes/id1345401053
Google Play: https://play.google.com/store/apps/details?id=com.truckfaultcode.truckfaultcodes
