DERATE: Truck Fault Codes

No adapter. No scanner. Just a photo. Warning light on? Point your camera at the dash — or at the code on the shop's scanner screen. DERATE reads it and gives you a FREE verdict in seconds: keep driving, caution, or stop now. With your plan (3 days free), DERATE also tells you: • What the code actually means, in plain language • Whether you can keep driving, and how long before the engine derates • The most likely root cause • The checks to run, in the order that saves the most time • A work order you can hand to the shop Works with SPN/FMI codes and OEM codes from Cummins, Freightliner, Paccar, Volvo, International and Detroit. BUILT FOR THE ROADSIDE Big type, high contrast, readable in direct sunlight with gloves on. Bilingual — English and Spanish, switched from Settings or detected from your phone. WHO IT IS FOR Owner-operators and drivers who need to know right now whether the load still moves. Shops that want the diagnosis and the work order before the truck is on the lift. PLANS • Rescue — one full diagnostic, one-time payment • Driver — unlimited diagnostics, weekly or monthly • Shop — unlimited diagnostics for the whole shop, monthly or yearly DERATE is a diagnostic assistant. It does not replace a certified technician, and it is not a repair authorization. — SUBSCRIPTION DETAILS DERATE Driver and DERATE Shop are auto-renewable subscriptions. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions in your Apple Account settings after purchase. Terms of Use: https://derate.app/terms Privacy Policy: https://derate.app/privacy