DiagPro: OBD2 DTC & VIN Lookup

Diagnose check engine lights quickly with 9,000+ OBD-II fault codes and decode VINs across 50+ motor manufacturers offline.

DiagPro is the essential pocket diagnostic tool and fault code reference for professional motor mechanics, automotive technicians, and DIY car enthusiasts. Quickly identify why your Check Engine Light is on and decode vehicle identification details in seconds.

Whether diagnosing an engine misfire, catalytic converter warning, or emissions system fault, DiagPro provides instant, accurate fault code explanations and manufacturer-specific definitions.

KEY FEATURES:

◆ Comprehensive OBD-II / DTC Fault Database • Access over 9,000+ diagnostic trouble codes (both Generic & Manufacturer-Specific). • Full coverage for Powertrain (P-Codes), with dedicated support for leading marques: Vauxhall/Opel, Ford, Toyota, Honda, Chevrolet, GMC, Buick, and many more. • Clear, detailed fault descriptions, potential causes, and diagnostic guidance.

◆ Smart Vehicle Identification (VIN & WMI Decoder) • Decode 17-digit VIN numbers with precision. • Built-in database of 2,000+ WMI (World Manufacturer Identifiers). • Instantly identify manufacturer details, country of origin, and vehicle specifications.

◆ Rapid Search & Intelligent Filters • Filter DTC codes by manufacturer or search directly by code number (e.g. P0420, P0171, P0301). • Search the WMI database by manufacturer name or country. • Instant search response with zero lag.

◆ Modern Industrial Workshop UI • Sleek dark-mode interface tailored for workshop and garage lighting conditions. • Responsive animations, card-based navigation, and high-contrast typography.

◆ 100% Offline Capability • Look up critical diagnostic codes on the go—even in basement car parks or remote workshops without mobile reception.

IDEAL FOR: • Professional Mechanics & Garage Technicians needing a fast, reliable DTC handbook. • DIY Car Enthusiasts working on home maintenance and track projects. • Second-hand Car Buyers verifying VIN provenance and checking stored fault codes before purchase. • Everyday Drivers wanting to understand dashboard warning lights before their MOT or service.

Download DiagPro today and take the guesswork out of vehicle diagnostics!