Fault Code Library
HITS-UK
About this app
- Category Reference
- Age 10
- Updated Apr 11, 2024
- OS IOS
Editor reviews
Fault Code Library is a fast, searchable reference app for decoding fault and error codes across vehicles, HVAC systems, appliances, and industrial equipment. Instantly find accurate meanings, likely causes, and recommended fixes to speed up diagnostics. Ideal for technicians, mechanics, maintenance teams, and DIY troubleshooters who need reliable insights on the job or in the garage.
Core features include universal code lookup by code, keyword, brand, or model; practical troubleshooting guidance with symptoms, causes, and step-by-step fixes; and productivity tools like bookmarks, history, and offline data packs. With optimized search and clear explanations, it outperforms generic manuals and scattered web results.
Keywords: OBD2 DTC lookup, automotive diagnostics, HVAC error codes, appliance fault codes, PLC alarms, offline reference, maintenance utilities.
Screenshots
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How to use:
1. Download and open the app, then choose your category such as Automotive, HVAC, Appliances, or Industrial.
2. Optionally sign in to sync Favorites and History across devices and enable cloud backup.
3. Enter a fault code or search by product, brand, or model; use filters for system, year, or series to narrow results.
4. Open a result to view definition, common causes, recommended fixes, and severity; follow the steps to troubleshoot on site.
5. Save important entries to Favorites, download offline packs for your brands, and export or share a quick report with your team or customer.