What are the common issues when the car's warning light comes on?
2 Answers
When the car's warning light comes on, it is generally due to a damaged sensor. Here are the relevant details: 1. If the sensor is damaged, it will transmit incorrect signals, which can also trigger the warning light. If this is the cause, simply replacing the sensor will resolve the issue. 2. If the sensor is confirmed to be functioning properly, the primary cause of exhaust emission issues is often carbon buildup, and the vehicle's carbon buildup may be quite severe. There are many reasons for carbon buildup, but the root cause is incomplete combustion of gasoline, which leaves residues inside the engine that accumulate over time and form carbon deposits. This is related to both driving habits and the quality of the fuel used. If unsuitable or low-quality gasoline is used, incomplete combustion can occur, leading to carbon buildup.
That time my car's warning light came on really freaked me out. Let's start with the most common ones - if the engine warning light (yellow engine icon) comes on, it's usually an emissions issue, like a dirty oxygen sensor, excessive carbon buildup, or using low-quality fuel. When the brake system light comes on, check if the handbrake is fully released - low brake fluid will also trigger it. A flashing battery light (red battery icon) could mean a loose alternator belt or a dying battery. If the oil pressure light (red oil can) comes on, stop immediately to check - either there's an oil leak or the oil pump is failing. An intermittent ABS light usually means the wheel speed sensor is clogged with mud. The coolant temperature light typically indicates low coolant or a stuck thermostat. Last time my ABS light came on, it was fixed by washing off metal shavings from the sensor during a car wash - saved me 500 bucks.
