🚛 What Happens If You Ignore ECM Fault Codes 111 or 343? On Cummins M11, L10, and N14 ECMs, codes 111 and 343 mean an internal failure. Your truck might run for a while, but it will eventually shut down and not start again. 😱 If you see these codes, get your ECM checked immediately to avoid breakdowns. ✅ 👉 Have you ever had fault code 111 or 343 on your truck? Share it in the comments. #Trucks #TruckMaintenance #TruckTips | Oscar Truck ECM

⚡ How to Prevent ECM Damage When Flashing. When flashing an older N14, M11, or L10, always connect to the 5-pin engine connector 🔌With the key on, you’ll be able to calibrate or flash the ECM safely ✅If you use the cab connector, the process may stop halfway, shutting the truck down and making recalibration difficult ❌🚛Always connect at the engine to keep your ECM and programming safe 🛠️✨ Follow for more ECM repair and programming tips #DieselEngineRepair #ECMRepair #DieselTech | Oscar Truck