The Code BreakerVehicle Diagnostic Code & Engine Swap Database
Search diagnostic trouble codes, Golden Values, and engine swap configurations across agricultural, marine, automotive, and off-road platforms.
From code to fix.
VehicleExaminer turns a cryptic trouble code into a verified repair path. Three steps, no guesswork.
Pick Your Platform
Choose from our three live diagnostic verticals — Ag-Tech, Marine, or Automotive. Each one is a dedicated database of trouble codes, specs, and repair data for that equipment type.
Search the Code
Enter a diagnostic trouble code, alarm, or symptom. The Examiner returns the definition, likely causes, and the verified Golden Values — the exact voltage, pressure, and resistance specs you need to diagnose it right.
Fix It With Confidence
Follow the verified data and recommended tools and parts. No guesswork, no forum rabbit holes — just the proven specs trusted since 2015.
Three diagnostic verticals are fully active right now. Click any of them to start searching.
Tractors, combines, and implements. SPN/FMI codes, DEF system faults, and John Deere, Case IH, and Kubota fault data.
Outboards, inboards, and sterndrives. Mercury, Yamaha, and Honda alarms, fault codes, and sensor specs.
Cars, trucks, and performance builds. OBD-II codes, engine swap fitment, and LS/Cummins swap configurations.
Choose your platform.
16 diagnostic verticals. Agricultural, marine, automotive, and off-road. Select your platform to access codes, Golden Values, and swap data.
Ag-Tech / Farm
Marine
Heavy Duty Trucks
Custom Swaps
Automotive
UTV / Trail Tracker
Two-Wheel Tech
Snow Zone
Lawn & Landscape
Off-Grid Power
E-Mobility
Heavy Equipment
RV / Trailer
Aviation / LSA
Golf / Turf
Industrial / Stationary
Diagnostic information for agricultural, off-road, and competition use. Not intended for emissions-controlled on-road vehicles where prohibited.