How to Clear the Engine Fault Light?
2 Answers
Methods to clear the engine fault light: Start and turn off the vehicle three times in a row; or disconnect the negative terminal of the engine battery, wait for 30 seconds, and then reconnect it. More information about the engine fault light is as follows: 1. The engine fault signal is issued by the ECU, which controls all electronic devices of the engine, such as the electronic throttle, fuel injector, generator, fuel pump, etc., covering various systems including intake, exhaust, fuel, ignition, and timing. 2. There are two scenarios when the engine fault light is on: one is a yellow symbol light, indicating an engine fault that requires inspection and repair; the other is a red symbol light, indicating a severe engine fault that normally requires immediate repair.
When it comes to clearing the engine malfunction light, I've handled it several times myself, and the method is actually not difficult. First, don't panic. The light usually comes on when the car's computer detects a minor issue, such as a sensor false alarm. I often use an OBD scanner to clear it: plug it into the port under the steering wheel, connect it to a mobile app or device, read the fault code, and then press the clear button. These tools can be bought online for just a few tens of dollars and are very practical. However, if the light comes back on after clearing, you need to check the cause, such as aging spark plugs or a clogged intake system. Not fixing it in time may lead to increased fuel consumption or engine damage. I recommend checking the car's condition weekly. Don't take shortcuts by disconnecting the battery directly, as that will reset the entire system but won't solve the problem. Safety first—when the light is on, drive at a limited speed and avoid slamming the accelerator to prevent accidents. If possible, try simple solutions first before going to a professional repair shop, which saves money and ensures safety.
