What Causes the Engine Warning Light to Illuminate in Cold Weather?

[McCatherine]

The reasons for the engine warning light illuminating in cold weather are: 1. During winter starts or when temperatures are relatively low, the internal temperature of the engine is also quite low; 2. If the warning light remains illuminated during startup, it is highly likely that there is excessive carbon buildup in the cylinders. Since carbon absorbs oil, the temperature in the cylinders cannot reach a stable level. The methods to clear the engine warning light are: starting and turning off the vehicle three times in a row or disconnecting the negative terminal of the engine battery for 30 seconds before reconnecting it. It is important to note that when the engine warning light is on, it usually cannot be cleared manually. Typically, the issue must be diagnosed and resolved at a 4S shop using a fault detection tool before the light can be turned off.