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

Location of the Automotive Oxygen Sensor?

1 Answers

OLillian

07/30/25 12:44am

An automobile has two oxygen sensors, installed in the exhaust pipe. Below is an introduction to the two oxygen sensors in a car: 1. One is located before the three-way catalytic converter, referred to as the primary oxygen sensor or upstream oxygen sensor, used for mixture feedback control. The engine control unit adjusts the fuel injection quantity based on the feedback signal from the primary oxygen sensor, maintaining the actual air-fuel ratio close to the theoretical air-fuel ratio, to detect the oxygen concentration before catalytic conversion. 2. The other is located after the three-way catalytic converter, known as the secondary oxygen sensor or downstream oxygen sensor, used to monitor the catalytic purification efficiency of the three-way catalytic converter. When the three-way catalytic converter is damaged and its conversion efficiency is lost, it is almost equivalent to not having a three-way catalytic converter installed. The signal voltage waveforms of the front and rear oxygen sensors become similar, and the voltage fluctuation ranges also tend to be consistent, indicating a decline in the conversion capability of the three-way catalytic converter.

Was this review help?

9

0

Share

More Forum Discussions

Should You Buy a Steering Wheel Cover?

You should buy a steering wheel cover. The benefits of a steering wheel cover are: 1. Protects the steering wheel from wear and reduces vibration; 2. Improves grip and friction, preventing slippage due to sweaty hands; 3. Enhances responsiveness and safety while driving; 4. Easy to remove and clean; 5. Protects the original steering wheel. The function of the steering wheel is to convert the force applied by the driver on the edge of the steering wheel into torque, which is then transmitted to the steering shaft to change the direction of the vehicle. Steering wheels are categorized into: single-spoke, double-spoke, three-spoke, and four-spoke designs. The method to adjust the height of the steering wheel is: 1. Locate the lever at the bottom of the steering wheel; 2. Push down the lever to adjust.

What type of engine oil should be used for Haval H2?

Haval H2 uses SM-grade 5W30 engine oil. The functions of engine oil are: 1. To separate the relatively sliding parts' surfaces, thereby reducing wear; 2. To bring heat back to the oil tank and then dissipate it into the air, helping the radiator cool the engine; 3. To circulate carbon deposits, sludge, and worn metal particles from engine parts back to the oil tank, flushing away dirt generated on the working surfaces of parts through the flow of lubricating oil. Taking the 2018 Haval H2 as an example, its body structure is a 5-door, 5-seat SUV, with body dimensions of: length 4365mm, width 1814mm, height 1710mm, a wheelbase of 2560mm, a fuel tank capacity of 50L, and a body weight of 1450kg.

What is the fuel consumption per 100 kilometers for Volkswagen?

Volkswagen cars consume 7 liters of fuel per 100 kilometers. Here is the extended content: 1. The measurement of fuel consumption per 100 kilometers is conducted by the manufacturer under specified conditions such as temperature, wind direction, and wind speed. The vehicle is maintained at a certain speed on a flat road or on a chassis dynamometer, and then the fuel consumption is calculated using exhaust gas analyzers and the carbon balance method. 2. The laboratory data for fuel consumption per 100 kilometers is derived. Since most vehicles approach their most economical speed at 90 kilometers per hour, the theoretical fuel consumption often published is the steady-speed fuel consumption per 100 kilometers at 90 km/h. 3. Steady-speed fuel consumption refers to the fuel economy indicator when a car is driving at a constant speed on a good road surface. Since steady-speed driving is a basic operating condition for cars on highways, and this type of fuel consumption is easy to measure, it is widely adopted.

How to reset the overdue Service B reminder on a Mercedes-Benz C200?

Mercedes-Benz C200L displays the method to reset the overdue Service B reminder as follows: 1. Turn on the ignition, shift to position 1. 2. Simultaneously press the call button and OK button, hold for 5 seconds. 3. After the menu appears, select the ASSTSTPLUS service code. 4. Choose to confirm the complete service package, then press the OK button to reset. Additional information about the Mercedes-Benz C200L: 1. The Mercedes-Benz C200L is positioned as a mid-size sedan, featuring a stylish and sporty exterior design. 2. The Mercedes-Benz C200L is equipped with a 2.0T turbocharged engine, delivering maximum power of 184 horsepower and maximum torque of 300 N·m. It accelerates from 0-100 km/h in just 7.9 seconds, with an official combined fuel consumption of 6.3 L/100km. It is paired with a 9-speed automatic transmission.

How many points are deducted for a private car carrying one extra passenger?

A private car carrying one extra passenger will be deducted 2 points and fined, while a passenger vehicle carrying one extra passenger will be deducted 6 points. According to regulations, motor vehicles must not carry more passengers than the approved capacity, and passenger vehicles must not carry cargo in violation of the rules. Below is an introduction to the hazards of vehicle overloading: 1. Overloading reduces the braking and steering performance of the vehicle: Excessive load increases the vehicle's inertia, lengthens the braking distance, and raises the risk of accidents. The doubled total load weakens braking effectiveness on slopes, reduces turning sensitivity, and increases the likelihood of accidents such as brake failure, rollback, and tire blowouts. 2. Overloading also affects the vehicle's steering performance: For example, it may cause the steering wheel to feel light and shaky, increasing the risk of accidents due to loss of steering control. Driving an overloaded vehicle reduces stability, increases centrifugal force, and makes vehicle control more difficult, especially when encountering curves, slopes, or emergencies, leading to accidents due to delayed reactions or inadequate control.

Why is the Mazda engine start-up noise so loud?

Mazda's loud cold start noise is due to the arrangement of the exhaust manifold, which positions the three-way catalytic converter too far back. The three-way catalytic converter must reach a certain temperature to effectively filter exhaust gases. Therefore, to rapidly heat up the three-way catalytic converter, the exhaust valve closure is deliberately delayed during cold starts, causing the air-fuel mixture to enter the exhaust manifold and undergo detonation, resulting in the loud cold start noise. More information about Mazda is as follows: Overview: Mazda, officially known as Mazda Motor Corporation, is a Japanese multinational automaker listed on the Tokyo Stock Exchange (TYO). Its business scope includes passenger cars, automobile manufacturing, and sales. Models: Mazda's global passenger car lineup includes: SUV series CX-3, CX-30, CX-4, CX-5, CX-8, CX-9, MX-30; Sedan series Mazda2, Mazda3, Mazda6 (known as "Atenza" by FAW Car); Sports car MX-5.

Trending Ranking

Release the Clutch First or Pull the Handbrake First When Parking?

What colors are available for the new Santana?

How to turn off Honda ACC/LKAS?

The Difference Between Commuter Cars and Family Cars

Is the Mazda CX-4 a Fully Imported Vehicle?

When replacing two tires, should they be placed in the front or the back?

What is the fuel tank capacity of the 2016 Baojun 560 in liters?

What Tools Are Needed to Remove Tires?

How to Adjust the Rear Brake of a Scooter Motorcycle?

Do You Need to Press the Clutch When Shifting Out of Gear in a Manual Transmission?

More Forum Discussions

How to Start a Passat When the Key Fob Battery is Dead?

What is the difference between the Mercedes-Benz E300 and E300L?

How to Turn Off the Automatic Headlights on a Civic?

Why is the central control screen of Geely Emgrand not lighting up?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.