Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

What is the fault when the OBD light appears on the dashboard?

1 Answers

GenesisFitz

07/29/25 3:13pm

The OBD light appearing on the dashboard is the engine exhaust system fault indicator. OBD stands for On-Board Diagnostics in Chinese. This system continuously monitors the operating conditions of the engine and the working status of the exhaust after-treatment system. Once it detects a situation that may cause excessive emissions, it immediately issues a warning. How OBD works: 1. The OBD device monitors multiple systems and components, including the engine, catalytic converter, particulate filter, oxygen sensor, emission control system, fuel system, EGR, etc.; 2. OBD connects to the Electronic Control Unit (ECU) through various emission-related component information. The ECU has the function of detecting and analyzing emission-related faults. When an emission fault occurs, the ECU records the fault information and related codes, and issues a warning through the fault light to inform the driver. The ECU ensures access to and processing of fault information through a standard data interface.

Was this review help?

5

5

Share

More Forum Discussions

Which Subject is Required to Drive?

Subject Two requires driving. The required study hours for Subjects 1-4 are 12, 16, 24, and 10 respectively. Therefore, Subject Three requires a total of 24 study hours, with an overall total of 62 study hours. Below is relevant information: Reverse Parking: Compared to the original electronic pole test, the 'garage shifting' skill has been removed. It assesses the skill of entering a vertical garage from both left and right sides while the vehicle is moving horizontally. Parallel Parking: There is no difference from the parallel parking in the 'Nine Selected Three' test. The vehicle is driven to a position parallel to the forward direction in front of the garage, then reversed into the garage to the right rear without any pauses in between.

How to Activate the Left Turn Signal in a Car?

To activate the left turn signal in a car, simply push the turn signal lever downward. The functions of turn signals include: 1. Indicating the intended turning direction to pedestrians or other vehicles; 2. Signaling the direction for overtaking or lane changing; 3. When both left and right turn signals flash simultaneously, it indicates an emergency situation to alert other vehicles. Precautions for using turn signals are: 1. Activate the turn signal in advance before turning; 2. Use the left turn signal when overtaking and the right turn signal when returning to the original lane; 3. After activating the turn signal, observe pedestrians and oncoming vehicles before maneuvering; 4. Before making a left turn or U-turn, check for any road signs prohibiting such actions before activating the turn signal.

Which country is Renault from?

Renault is a French automobile manufacturer, and its models include: Renault City K-ZE, Koleos, Kadjar, Megane, Captur, etc. Taking the 2019 Renault City K-ZE as an example, it belongs to the small SUV category, with body dimensions of: length 3735mm, width 1579mm, height 1484mm, wheelbase of 2423mm, and a curb weight of 921kg. The 2019 Renault City K-ZE features a MacPherson strut front suspension and a torsion beam rear suspension. It is equipped with a permanent magnet synchronous motor, delivering a maximum power of 33kw and a maximum torque of 125nm, paired with a single-speed fixed gear ratio transmission.

What is the applicable range of CH-4 diesel engine oil?

CH-grade four-stroke engines. Here are the relevant details: Introduction: CH-4 refers to the quality level being CH-grade, and the '4' denotes four-stroke engines. Currently, CF-4 and CH-4 are the most common. Additional Information: Compared to CF-4 grade, CH-4 grade exhibits significant improvements in the following performance aspects: superior anti-wear properties, effectively reducing wear on piston rings, cylinder liners, and valve train components; enhanced high-temperature resistance, effectively controlling deposit formation to maintain engine cleanliness and smooth operation; and better shear stability, effectively preventing viscosity loss to ensure long-lasting and stable lubrication protection.

What are the models of Pagani?

Pagani's models include the Huayra and Zonda, which belong to the Italian brand. Taking the 2016 Huayra as an example, it is a sports car with body dimensions of 4605mm in length, 2036mm in width, and 1169mm in height, a wheelbase of 2795mm, and a curb weight of 1350kg. The 2016 Huayra features a double-wishbone independent front suspension and a double-wishbone independent rear suspension. It is equipped with a 6.0T twin-turbocharged engine, delivering a maximum horsepower of 730PS, a maximum power of 537kW, and a maximum torque of 1000Nm, paired with a 7-speed mechanical automatic transmission.

Can I Bring a Backpack on the Car for Subject Three Driving Test?

You can bring a backpack on the car for the Subject Three driving test, but it should be placed on the back seat during the test. Here is the relevant information: Test content: Preparation for getting on the car, simulated light test, starting, driving straight, gear shifting operation, changing lanes, pulling over, going straight through intersections, turning left at intersections, turning right at intersections, passing pedestrian crossings, passing school zones, passing bus stops, meeting oncoming vehicles, overtaking, making U-turns, and nighttime driving. Safety and civilized driving knowledge test content: Requirements for safe and civilized driving operations, safe driving knowledge under adverse weather and complex road conditions, emergency handling methods in situations like tire blowouts, and post-accident handling knowledge.

Trending Ranking

What to Do If the Car Lights Were Left On All Night and the Car Won't Start?

How to Claim Insurance for a Cracked Windshield?

Vehicle Claims Center Process?

How to Start the Car When the Key is Broken?

How to Operate the Self-Cleaning Function of Great Wall Pickup Truck?

What to Do When Car Key Gets Rusty?

How to Repair a Broken Car Navigation Microphone?

What does sunny mean?

What to Do If There Are Many Cockroaches in the Car and Why?

How to Charge the Changan Benben at Home?

More Forum Discussions

What Should the Normal Idle Speed Be?

Where are Chaoyang tires produced?

What are the differences between Discovery Sport 200 and 240?

Can I preview the test site for Subject 2 in advance?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.