Why does the engine malfunction indicator light come on?

1 Answers
Jasmine
07/30/25 1:29am
If the engine malfunction indicator light comes on in your vehicle, it indicates that the engine's air-fuel mixture is not at the ideal ratio. The simplest method is to use a specialized diagnostic tool to read the fault codes in the engine system, and then perform troubleshooting based on the stored fault information. Common causes of this phenomenon include: Carbon buildup issues: Spark plugs that have not been replaced for a long time may have excessive gap, carbon buildup, or internal damage. Damage issues: One of the ignition coils in a cylinder may be damaged, causing that cylinder to malfunction.
Was this review help?
18
1
Share
More Forum Discussions

What Causes a Tire Leak When the Leak Point Cannot Be Found?

Tire leaks where the leak point cannot be found may be due to the following reasons: Hidden Location: If a tire is punctured by a foreign object, it can usually be found by carefully inspecting the tire surface. If the puncture is in a hidden location, you can sprinkle water on the tire surface to locate bubbles or even hear a hissing sound. Pay Attention to the Sidewall: As tire rubber ages, deep grooves may appear on the sidewall. However, as long as the sidewall has not been impacted and the cords are intact, the tire can still be used. The triangular indicator on the sidewall helps locate a raised mark in the tread grooves, which determines the actual wear limit of the tire. That value should be greater than 1.6 millimeters.
7
0
Share

Will the insurance company provide rescue service if the tire is punctured?

Tire puncture rescue is covered by insurance companies. Insurance definition: Automobile insurance is a type of commercial insurance that provides compensation for personal injuries or property damage caused to motor vehicles due to natural disasters or accidents. Compulsory Traffic Accident Liability Insurance (CTPLI): CTPLI is a mandatory national insurance that every vehicle owner must purchase. If a vehicle is driven without CTPLI, once detected, the vehicle will be impounded (until CTPLI is obtained and displayed in the designated position), fines will be imposed, and corresponding penalty points will be deducted. CTPLI primarily covers personal injuries and property losses to victims (excluding passengers in the insured vehicle and the insured person) in traffic accidents. However, the compensation limit of CTPLI is limited and cannot cover large-amount personal injury accidents.
12
0
Share

How many years are exempt from inspection for sedans?

Sedans are exempt from inspection for 6 years. Required materials: The vehicle owner needs to bring the vehicle's driving license (original and copy), the ID card of the vehicle owner, the compulsory traffic insurance policy of the vehicle, and the tax payment or tax exemption certificate of vehicle and vessel tax to complete the procedure. Exemption regulations: Vehicle inspection exemption means that for vehicles that meet the exemption conditions within 6 years, the on-site inspection procedure is exempted, and only the inspection mark needs to be applied for every two years, and it must be pasted on the vehicle as required. Essentially, it exempts the on-site inspection. As long as the conditions stipulated by the national policy are met, there is no need for on-site inspection, and the inspection mark can be directly applied for from the traffic management department.
11
0
Share

How much fuel does a sedan consume when idling with the AC on for one hour?

The fuel consumption of a sedan with the air conditioning on for one hour is 1-3 liters. Introduction to Air Conditioning: The automobile air conditioning system, commonly referred to as car AC, is used to regulate and control the temperature, humidity, air cleanliness, and airflow inside the vehicle cabin to optimal conditions. It provides a comfortable environment for passengers, reducing travel fatigue, and creates favorable working conditions for the driver, playing a crucial role in ensuring safe driving. Generally, it includes cooling devices, heating devices, and ventilation systems. This integrated system makes full use of the limited space inside the car, featuring a simple structure and ease of operation, making it a popular modern car air conditioning system internationally. Precautions for Using Air Conditioning: The car air conditioning system requires regular refilling of refrigerant. Prolonged neglect can lead to reduced cooling efficiency and slower cooling speeds. It is also essential to clean the car's air conditioning system regularly. Failure to do so can result in the growth of bacteria within the system, potentially harming the health of passengers.
12
3
Share

Can the insurance be transferred when the car ownership is changed?

Insurance can be transferred when the car ownership is changed. Automobile insurance: Automobile insurance mainly consists of compulsory traffic insurance and commercial insurance. Compulsory traffic insurance is mandatory but has limited coverage. Commercial insurance: Commercial insurance is optional and mainly includes the following types: vehicle damage insurance, which covers repair costs for your own vehicle due to collisions, with compensation provided by the insurance company. Third-party liability insurance: Third-party liability insurance covers compensation for injuries, deaths, or property damage caused by accidents involving both parties; the special clause for non-deductible insurance means that the part of the deductible that should be borne by the insured according to the terms will be covered by the insurance company.
5
4
Share

Should You Use Turn Signals When Turning?

Vehicles must use turn signals when turning. Using turn signals when turning is a fundamental safety and courteous driving practice for motor vehicles. According to the "Road Traffic Safety Law," failure to use turn signals when turning will result in a 1-point penalty on the driver's license and a corresponding fine. Motor vehicles must use turn signals when turning, overtaking, or changing lanes. The legal basis includes: Article 47 of the "Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China": "When overtaking, motor vehicles shall turn on the left turn signal in advance, switch between high and low beams, or sound the horn." Article 51, Item 3 of the "Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China": When passing through an intersection controlled by traffic signals, motor vehicles shall proceed as follows: When turning left, turn from the left side near the center of the intersection. Turn on the turn signal when turning, and use low beams when driving at night. Article 57, Items 1 and 2 of the "Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China": Motor vehicles shall use turn signals as follows: When turning left, changing lanes to the left, preparing to overtake, leaving a parking spot, or making a U-turn, the left turn signal shall be turned on in advance. When turning right, changing lanes to the right, returning to the original lane after overtaking, or parking by the roadside, the right turn signal shall be turned on in advance. Failure to use turn signals as required may result in a fine of 20-200 yuan and a 1-point deduction on the driver's license. The following are the legal bases for fines and point deductions: Article 90 of the "Road Traffic Safety Law of the People's Republic of China": If a motor vehicle driver violates the road traffic safety laws or regulations regarding road usage, they shall be given a warning or fined between 20 and 200 yuan. If this law provides otherwise, the relevant provisions shall apply. Four key points about turn signals: How to use turn signals: The turn signal button is usually located on the lever below the steering wheel. To operate it, push the lever up for the right turn signal and down for the left turn signal. Turn signals must be used when changing lanes or turning. The use of turn signals in the driving test (Subject 2): Turn signals are required in three parts of Subject 2—starting the vehicle, making a 90-degree turn, and parallel parking. When starting the vehicle, turn on the left turn signal before slowly moving. When exiting a parallel parking spot, turn on the left turn signal before turning left. When making a 90-degree turn, the turn signal must be activated before turning. The use of turn signals in the driving test (Subject 3): In Subject 3, turn signals are used in more scenarios, such as starting, changing lanes, overtaking, turning, making a U-turn, and parking. Generally, turn signals must be used whenever the vehicle's direction changes, and they should be activated for at least three seconds. Some drivers struggle with timing the turn signals correctly, using the wrong direction, activating them for too short or too long, forgetting to turn them off, or dealing with automatic signal cancellation. Drivers should note that, in addition to the 1-point penalty for improper use of turn signals, other violations that result in a 1-point deduction include improper meeting of vehicles, exceeding the allowed dimensions for cargo, driving without displaying inspection and insurance labels, and failing to carry a driver's license or vehicle registration. How to correctly operate turn signals: When overtaking, first turn on the left turn signal, then the right turn signal after completing the maneuver. When entering a highway, use the left turn signal, but when exiting, use the right turn signal. No signal is needed when entering a roundabout, but the right turn signal must be used when exiting. When parking by the roadside, use the right turn signal; when leaving the roadside, use the left turn signal. For U-turns, usually the left turn signal is used. When changing lanes to the left, use the left turn signal, and when changing lanes to the right, use the right turn signal. Always activate the turn signal in advance to give other drivers time to react.
13
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.