Access a comprehensive offline database of OBD2 (OBDII) codes for all major car manufacturers. Look up check engine codes, view descriptions, and identify possible causes on the go. Save your search history for quick reference.




241+ iOS apps curated and reviewed
If you already know OBD2 Codes Pro Auto offline, this is the deeper bench. 241+ obd2 codes pro auto offline apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 2.8★ (15) | No | No | Sep 2026 | |
| 2 | Free | 3.3★ (306) | No | No | Sep 2026 | |
| 3 | Free | 1.0★ (6) | No | No | Sep 2026 | |
| 4 | Free | 4.6★ (14K) | No | No | Aug 2026 | |
| 5 | Free | 4.6★ (5K) | No | Yes | Aug 2026 | |
| 6 | Free | 4.3★ (887) | No | Yes | Aug 2026 | |
| 7 | $0.99 | 1.0★ (2) | No | No | Jul 2026 | |
| 8 | Free | 5.0★ (1) | Yes | Yes | May 2026 |




Access a comprehensive offline database of OBD2 (OBDII) codes for all major car manufacturers. Look up check engine codes, view descriptions, and identify possible causes on the go. Save your search history for quick reference.




Instantly look up your car's check engine codes on the go. Access a vast database of OBD2 codes with descriptions and potential causes for all major manufacturers. Save your search history for quick reference.






Instantly look up your car's check engine code with this comprehensive guide. Access descriptions and potential causes for codes from major manufacturers, supporting 15 languages. Empower yourself with knowledge to avoid being overcharged by mechanics.


This app turns your smartphone into a powerful OBD2 scan tool. It allows you to read and clear trouble codes, view live data, and generate detailed repair reports for your vehicle. Understand your car's issues and make informed repair decisions.


Transform your smartphone into a professional car diagnostic tool. Read and clear engine fault codes, monitor real-time sensor data, and perform advanced diagnostics without a mechanic. Supports a wide range of OBD2 compliant vehicles.


This app transforms your device into a powerful car diagnostic tool. It allows you to monitor real-time sensor data, read and interpret diagnostic trouble codes (DTCs), and access detailed information about your vehicle's systems. Compatible with most cars manufactured after 1996.


Instantly look up check engine codes for virtually any car. Access a vast database of generic and manufacturer-specific fault codes with descriptions and potential causes, even offline.


Decode and understand car diagnostic trouble codes with this comprehensive interpreter. It provides detailed insights into fault codes, potential causes, and repair recommendations, complementing your existing OBD2 scanning tools. Access a vast database of codes across multiple languages and car brands to diagnose issues with confidence.


Decode automotive trouble codes with a comprehensive database and detailed explanations. Find step-by-step guides to diagnose and resolve issues, making car maintenance accessible for all users.


This application connects to your vehicle via Bluetooth to provide diagnostic and monitoring functions. It allows for fault code reading and clearing, performance testing, and travel analysis, offering a comprehensive view of your car's health and driving habits.


This app serves as a reference for standard Diagnostic Trouble Codes (DTCs). It helps users understand fault codes generated by a vehicle's onboard computer, aiding in problem diagnosis.


Struggling to find your car's OBD2 diagnostic port? This app acts as a search engine to help you easily locate your OBD connector. With a growing database of over 1000 vehicles, it assists in diagnosing your car.


Transform your iPhone into a powerful car diagnostic tool. Read and clear trouble codes, monitor live vehicle sensor data, and understand check engine light warnings. Works with most vehicles manufactured since 1996 using standard OBD2 adapters.


This app provides definitions and potential causes for On-Board Diagnostics (OBD) trouble codes. It covers a wide range of generic and manufacturer-specific codes for numerous vehicle models, helping users understand and potentially fix error codes.


This app provides comprehensive vehicle care and repair information for car and truck owners, DIYers, and technicians. It offers diagnostic capabilities with compatible OBD2 scanners and a vast database of verified fixes from ASE Master Technicians. Users can also access free vehicle maintenance information and schedule repairs.


Easily connect to your car's OBD2 port to monitor its performance in real-time. The app guides you through the connection process and supports various OBDII protocols for comprehensive diagnostics.


This app allows you to scan your car's trouble codes and view live data using an OBD2 Bluetooth adapter. It logs statistics and freeze frames for future reference, storing all diagnostic trouble codes (DTCs) on a server.


This app acts as a professional OBD2 car scanner, enabling users to diagnose, service, and customize their vehicles. It offers comprehensive diagnostic modes, real-time data monitoring, and various service functions like oil resets and battery registration.




Transform your smartphone into a powerful car diagnostic tool. Connect to your OBD2 scanner to read fault codes, clear warning lights, and monitor real-time engine data. Ideal for car enthusiasts and those looking to save on repair costs.