why my car engine light is on

When your car's check engine light comes on, it usually means the vehicle's electronic control system has detected an issue. This could be caused by something as simple as a faulty oxygen sensor, worn spark plugs, a problematic ignition coil, abnormalities in the fuel system, issues with the exhaust system, or even a loose gas cap. It's advisable to use an OBD - II scanner to read the trouble codes as soon as possible to pinpoint the exact problem, ignoring it for too long might lead to more serious damage down the line. Here in Malaysia, the hot and humid weather can speed up circuit aging or cause sensors to get damp, so regular circuit checks and keeping the engine bay clean are especially important. If the check engine light starts flashing or is accompanied by noticeable abnormalities like loss of power or strange noises, stop the vehicle immediately and contact a repair shop. This could indicate serious issues such as engine knocking or a damaged catalytic converter. During regular maintenance, make sure to use engine oil and fuel that meet the manufacturer's specifications, and replace the air filter regularly. These simple measures can effectively lower the likelihood of the check engine light being triggered. For newer models, the engine light might also be related to the emissions system; if left unresolved, it could cause you to fail your vehicle inspection, so prompt repairs are essential.