What are the causes of engine EV control system failure?
2 Answers
Engine EV control system failure indicates ECU damage. The ECU is the engine's control computer, often referred to as the brain of the engine. The causes of this failure include: 1. Power circuit failure; 2. Output power module failure; 3. Memory failure; 4. ECU water damage or moisture exposure. Engine types are categorized as: 1. By fuel type: gasoline engine, diesel engine; 2. By stroke: four-stroke internal combustion engine, two-stroke internal combustion engine; 3. By cooling method: water-cooled engine, air-cooled engine; 4. By cylinder count: single-cylinder engine, twin-cylinder engine; 5. By intake system: naturally aspirated engine, turbocharged engine, supercharged engine.
I've been driving for decades and have encountered several issues with the engine's electronic control system. The main problems were various sensors failing, such as the crankshaft position sensor or oxygen sensor aging, which prevented signals from reaching the computer board (ECU), causing the engine to suddenly stall or fail to start. Wiring issues are also quite common, like corroded or broken wire connectors, which are prone to failure when exposed to excessive rain. The ECU itself can also malfunction, such as when the circuit board gets soaked in water or is damaged by unstable voltage. These issues not only affect starting but can also increase fuel consumption and cause emissions to exceed standards. I recommend avoiding waterlogged roads while driving and having a mechanic check the wiring and sensor connections every six months to prevent minor issues from becoming major ones, which not only cost more to repair but also affect travel safety.
