Can the car be driven if the computer board is broken?
2 Answers
If the car's computer board is broken, it cannot be driven. On-board computer: The computer in a car, also known as the on-board computer (ECU), or electronic control unit, uses simple logic gates and integrated circuit principles to process simple electronic signals and calculations. It receives data from various sensors in the car, processes and computes the information, and then sends signals to the engine to control its operation (such as the fuel injection system and ignition timing). Typically, the on-board computer is installed under the dashboard on the driver's side or near the wiper linkage.
In the past, when I repaired cars, I often encountered ECU issues. Whether a car can be driven when the ECU is damaged depends on the severity of the fault. The ECU is responsible for controlling core functions such as engine ignition, fuel supply, and emissions; if it completely fails, the car won't start at all—turning the key will have no response. If only certain modules are damaged, such as sensor connection errors, the car might start and move with difficulty, but its condition will be terrible: like my car, which experienced severe idle shaking, weak acceleration, random stalling, and even all warning lights turning on. Driving under such conditions is extremely risky: it may lead to sudden power loss, brake system failures, or breakdowns on the road; it can also cause damage to other components, such as burning out the catalytic converter or ruining the engine, leading to even costlier repairs. The solution is simple: if you notice a problem, stop the car immediately for inspection—don't risk driving it. Call a tow truck to take it to a professional repair shop. Use a diagnostic tool to read the fault codes and decide whether to replace the ECU or repair it. Regular maintenance, such as keeping the circuits clean and ensuring stable battery voltage, can help prevent such issues.
