Wholesale Automotive O2 Oxygen Lambda Sensor for Vehicles

• Customization: Available
• Suitable for Car Brands: Tail Gas Treatment
• Car Model: Bestn
• Engine Type: Bestn
• Type: Exhaust Pipe
• Body Material: Steel
• Discharge Standard: Euro IV
• Certification: ISO9001
• Noise Source: The Noise of Engine
• The Noise of Engine: Aerodynamic Noise
• Automobile Chassis Noise: Transmission Noise
• Component: Exhaust Tail Pipe
• Main Market: Europe
• Munber of Channels: 100, 200, 300, 400, 500, 600 Cpsi
• Usage: Automobile Exhaust System
• Size: Customized
• Shape: Cuboid, Square, Roundness
• Transport Package: Carton Box with Pallet, Wooden Box
• Specification: 150*150*300/150*150*100/100*100*100
• Trademark: BSETN
• Origin: Pingxiang Jiangxi
• HS Code: 6909190000
• Production Capacity: 500 Cubic Meter/Cubic Meters Per Month

Product Description

Wholesale Automotive O2 Oxygen Lambda Sensor for Vehicles 

Introduction to Oxygen Sensors (O₂ Sensors)
1. Basic Function
The oxygen sensor (O₂ sensor) is a critical component of a vehicle's emissions control system. It monitors the oxygen levels in the exhaust gases and sends data to the Engine Control Unit (ECU) to adjust the air-fuel ratio (AFR) in real time. This ensures efficient combustion, optimizes fuel economy, and reduces harmful emissions.

 

2. Main Types
(1) By Location
Upstream O2 Sensor (Pre-Catalytic Converter)
Located before the catalytic converter, it regulates fuel injection.
Directly affects engine performance and fuel efficiency.
Downstream O2 Sensor (Post-Catalytic Converter)
Positioned after the catalytic converter, it monitors the converter's efficiency.
Primarily used for emissions compliance (e.g., OBD-II diagnostics).

(2) By Working Principle
Narrow-Band O2 Sensor
Detects only "rich" or "lean" conditions (low precision), common in older vehicles.
Wide-Band O2 Sensor (Lambda Sensor)
Measures exact air-fuel ratios (e.g., stoichiometric 14.7:1), used in modern fuel-injected engines.

3. Common Failures & Symptoms

Symptom	Possible Cause	Impact
Check Engine Light On	Contamination (sulfur, carbon buildup)	Increased fuel consumption, reduced power
Rough Idling	Slow response or signal drift	Poor combustion, failed emissions
Weak Acceleration	Heater circuit failure	ECU cannot adjust AFR properly

4. Maintenance & Replacement Tips

Replacement Interval: Typically every 80,000-100,000 km (varies by vehicle and fuel quality).

Cleaning Method: Specialized cleaners may help with carbon deposits, but replacement is often recommended.

ECU Compatibility: Some models require ECU reset/reprogramming (especially downstream sensors).

5.How to install

 

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