How to deal with the OBD warning light in a car?

1 Answers
LeBlakely
07/29/25 11:54pm
The method to deal with the OBD warning light in a car is: enter the electronic control unit to read the fault code, determine the nature and location of the fault, and then proceed with analysis and repair. The OBD warning light in a car refers to the engine fault light, which monitors multiple systems and components, including the engine, catalytic converter, particulate trap, oxygen sensor, emission control system, fuel system, and EGR. The reasons for the OBD warning light to illuminate are: 1. Oxygen sensor malfunction; 2. Three-way catalytic converter leakage, blockage, or damage; 3. Faults in the emission control system, fuel system, or EGR.
Was this review help?
10
5
Share
More Forum Discussions

Do You Need to Wait for a Red Light When Making a U-Turn?

If the U-turn signal light is red, you must wait to make a U-turn; otherwise, it will be considered running a red light. According to the "Road Traffic Safety Law," this violation incurs a penalty of 6 demerit points and a fine of 200 RMB. If there is no dedicated U-turn signal light, and the gap is marked with a dashed line, the U-turn is not affected by the traffic light and does not require crossing the pedestrian crossing. However, if the gap is marked with a solid line, the U-turn must cross the pedestrian crossing and is subject to the left-turn signal light. Making a U-turn directly without following these rules may result in being photographed or penalized by on-site traffic police. When making a U-turn that requires crossing a pedestrian crossing, yielding to pedestrians is mandatory: 1. If pedestrians are walking on the right side of the crosswalk and have not reached the centerline of the road, vehicles on the left side must slow down and allow them to pass safely. 2. If pedestrians are waiting outside the boundary of the motorized and non-motorized lanes and have not entered the roadway, vehicles should slow down and let them pass safely. 3. If pedestrians have crossed the boundary between motorized and non-motorized lanes, failing to stop for them is a violation and punishable. 4. If pedestrians enter the motorized lane (Lane A) from the crosswalk, vehicles in Lane B must slow down and allow them to pass safely. Failing to stop for pedestrians in Lane A is a violation and punishable. 5. If pedestrians are waiting at the centerline of the road but have not entered the motorized lane, failing to stop for them is a violation and punishable. 6. If pedestrians cross the centerline and enter the motorized lane, failing to stop for them is a violation and punishable. 7. If the road is divided by a median with greenery, and pedestrians are waiting in the central stopping area, vehicles must slow down and allow them to pass safely. Permissible U-turn scenarios: 1. If an intersection has a U-turn sign, a U-turn is allowed. If there is a U-turn signal light, follow its instructions. If no signal light exists, make the U-turn without obstructing other vehicles or pedestrians. 2. If there is no explicit "No U-Turn" or "No Left Turn" sign at an intersection, a U-turn is allowed. The absence of such signs, along with no solid centerline, means you can proceed with the U-turn. 3. U-turns are also permitted in yellow grid zones. These zones are no-parking areas marked at intersections prone to congestion or near important facilities. While stopping in these zones is prohibited, making a U-turn is allowed unless a median barrier is present. 4. If a U-turn signal light is present, follow its instructions—only proceed on green. 5. If a "No Left Turn" sign coexists with a "U-Turn Permitted" sign, U-turns are allowed, but left turns are not. Note that "No U-Turn" and "No Left Turn" are not the same. Key considerations when making a U-turn: 1. Observe road markings—if a solid line is present, U-turns are prohibited under any circumstances. Continue driving to find a suitable location. 2. If a "No Left Turn" sign is posted, U-turns are also prohibited at that intersection, as U-turns inherently involve a left-turn maneuver. 3. U-turns must be made from the innermost left-turn lane. If you are in the second left-turn lane, a U-turn is not permitted. 4. Always yield to oncoming traffic when making a U-turn. Failing to do so may result in bearing full liability for any accidents. 5. Near intersection stop lines, lane arrows guide vehicle positioning. Not all leftmost lanes are for left turns—some may have straight arrows. Even if no explicit "No U-Turn" signs are present, U-turns are prohibited in such lanes.
18
2
Share

How to Remove Anti-Theft License Plate Screw Caps?

The method to remove anti-theft license plate screw caps is: Use a flathead screwdriver and a hammer. Insert the screwdriver into the seam and strike the head of the screwdriver with the hammer to remove it. License plate screw caps serve an anti-theft sealing function. The screws on license plates have anti-theft measures; if you want to remove the license plate, you can only destroy the anti-theft device. The first Chinese character on a vehicle license plate represents the abbreviation of the province or municipality directly under the central government. The uppercase letter following the Chinese character indicates the city or district. License plates are hard-coded number plates issued by vehicle management authorities after reviewing, inspecting, and registering vehicles that have applied for license plates. Vehicle license plates are the legal certificates permitting cars to drive on the road.
7
2
Share

What kind of driver's license is required for a 6.2-meter car?

A 6.2-meter car requires an A1 driver's license. The main part of the driver's license records the motor vehicle driver's information, including name, gender, date of birth, nationality, address, ID number, motor vehicle driver's license number, and photo. The supplementary part of the license includes the initial issuance date, permitted vehicle type code, validity period, issuing authority seal, and file number. Requirements for obtaining an A1 driver's license: 1. Age condition: Applicants for large passenger vehicle licenses must be between 26 and 50 years old. 2. Height must be at least 155 cm, and vision must meet the requirement of at least 5.0 on the logarithmic visual acuity chart for both naked eyes or corrected vision.
11
5
Share

Comparison between Chevrolet Malibu XL and Superb

Comparison between Chevrolet Malibu XL and Superb: 1. Different manufacturers: The manufacturer of Chevrolet Malibu XL is SAIC-GM Chevrolet; The manufacturer of Superb is SAIC Volkswagen Skoda. 2. Different body structures: The body structure of Chevrolet Malibu XL is a sedan; The body structure of Superb is a hatchback. Taking the Malibu XL 2021 535T Automatic Ruixing Edition as an example, its body dimensions are 4933mm in length, 1854mm in width, and 1472mm in height, with a wheelbase of 2829mm. The body structure is a 4-door 5-seater sedan, with front-wheel drive and electric power steering.
1
1
Share

What is the difference between Wuling displacement E and S?

The difference between Wuling displacement E and S lies in their versions: Wuling displacement E is the basic version, while S is the standard version. Taking the Wuling Zhiguang 2020 1.2L Utility Model National VILS as an example, the vehicle has a length, width, and height of 3797 mm, 1510 mm, and 1820 mm respectively, with a wheelbase of 2500 mm and a fuel tank capacity of 38 liters. In terms of power, it is equipped with a 1.2-liter naturally aspirated engine, delivering a maximum power of 56 kW and a maximum torque of 108 Nm. For suspension, the front suspension of this model uses a MacPherson independent suspension, and the rear suspension employs a longitudinal leaf spring suspension.
2
3
Share

How to reset the sunroof of Volkswagen Tiguan?

Volkswagen Tiguan sunroof reset method is: Hold the sunroof button to open fully and continue pressing for a few seconds, then hold to close completely and continue pressing for a few seconds, repeat this process several times. The functions of a car sunroof are: 1. It can release gas inside the vehicle to ensure fresh air; 2. It can lower the temperature inside the car and eliminate windshield fogging; 3. It can effectively reduce wind noise; 4. It can increase the brightness of light inside the vehicle. Taking the Tiguan 2017 300TSI Automatic Silk Road Fashion Edition as an example: This car is classified as a compact SUV, with dimensions of 4506mm in length, 1809mm in width, and 1685mm in height, and a wheelbase of 2684mm.
7
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.