Every Fault Code, Every Time
Diesel Repair has the BIGGEST fault code database in the diesel industry: every commercial truck DTC from the introduction of Electronic Control Modules (ECMs) to the current year and models. OEM and generic are all accounted for, so no matter how you retrieve the codes, you’re able to find the repair information– faster and easier than ever before.
Instant Repair Information for Everyone
Free users can search and view the entire Diesel Repair database with fault code descriptions and “quick repair” troubleshooting.
Diesel Repair subscribers get detailed step-by-step repair information for every fault code searched.
Developed by subject matter experts at Diesel Laptops, our fault code repair guides are painstakingly accurate and up-to-date. They feature a consistent layout and easy-to-use instructions across all manufacturers. Engines, transmissions, anti-lock brake systems, and more!
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Are you ready to get started with Diesel Repair? Dive into the most robust and accurate repair info in the industry. Getting started is easy. Start with our FREE plan, or go straight into our unlimited plan, Diesel Repair Professional. Sign up today!
Every Fault Code you Need
Our database contains every fault code and repair information for all engine manufacturers, transmissions, Anti-lock brake systems and more.

Engine Manufacturer Fault Codes
- Caterpillar
- Chevrolet Duramax
- Cummins
- Detroit Diesel
- Ford PowerStroke
- GMC Duramax
- HINO
- International Engines
- Isuzu Engines
- MBE (Mercedes-Benz Engines)
- Mack Engines
- Mitsubishi FUSO
- PACCAR Engines
- RAM Cummins
- Sprinter Engines
- Volvo Engines

Transmission Fault Codes
- Allison
- Chevrolet
- Eaton
- HINO
- Mack mDrive
- Meritor
- Mitsubishi FUSO
- Volvo iShift

Anti-lock Brake System (ABS) Fault Codes
- Bendix ABS – Hydraulic
- Bendix ABS – Air
- HINO ABS
- Mitsubishi FUSO
- WABCO ABS

Other Modules
- Bendix VORAD ADAS System
- Bendix Wingman ADAS System
- Freightliner Cab & Chassis Controllers
- Freightliner Custom Chassis Corporation (FCCC) Body Controllers
- Hino Cab Controllers
- International Cab & Chassis Controllers
- Kenworth Cab & Chassis Controllers
- Mack Cab & Chassis Controllers
- Mitsubishi FUSO Cab & Chassis Controllers
- Peterbilt Cab & Chassis Controllers
- RAM Cab & Chassis Controllers
- ThermoKing Reefers & APUs
- Thomas Built Buses
- Volvo Truck Cab & Chassis Controllers
- WABCO OnGuard & OnLane ADAS Systems
- Western Star Cab & Chassis Controllers
One Click from Code to Fix
Search by fault code, year, make, or model, and get a complete list of DTCs with detailed descriptions, a list of potential causes, and repair guides. Save or print any document you need.
Users can enter any search query, partial or full. This ensures they can easily find what they are looking for on Diesel Repair.
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7440 Broad River Rd, Irmo, SC 29063

