Air-fuel ratio sensor O2 sensor for Volvo Electrical system oxygen sensor 30774563 Lambda sensor  

Product Description:

 
Air fuel ratio sensor
OE NO.:  30774563 30751545

Applicable vehicle type: For Volvo

The automotive oxygen sensor is a critical automotive component used for air-fuel ratio control and three-way catalyst monitoring, which can effectively reduce exhaust emissions and improve fuel combustion quality.

The oxygen sensor is installed on the engine exhaust pipe to detect the oxygen concentration in the exhaust gas. It sends feedback signals to the electronic control unit (ECU), which adjusts the fuel injection amount accordingly to achieve combustion with the theoretical air-fuel ratio (14.7:1), thereby reducing fuel consumption and exhaust emissions and improving engine performance. In a dual oxygen sensor system, the front oxygen sensor is located before the three-way catalytic converter and is used for feedback control of the air-fuel mixture. The rear oxygen sensor is located after the three-way catalytic converter and is used to detect the operating status of the three-way catalytic converter.

Common Faults and Detection:

• Common Faults: Include poisoning (such as lead poisoning, silicon poisoning), carbon buildup, ceramic cracking, broken heater resistance wire, and broken internal electrode lead. These faults can lead to problems such as increased engine fuel consumption, aggravated exhaust pollution, and unstable idle.
• Detection Methods: Commonly use a digital multimeter with high input resistance or an oscilloscope to detect the heater resistance and feedback voltage. Faults can also be judged by observing the color of the oxygen sensor edge: black may indicate carbon buildup, brown may indicate lead poisoning, and white may indicate silicon poisoning.

• 20 years of specialized auto parts industry experience
• Expert technical team for comprehensive support
• Direct partnerships with repair shops for real-world feedback
• Premium quality parts ensuring reliability and durability
• Extensive inventory with over 500,000+ items ready to ship
• Responsive customer service with quick turnaround
• Customized solutions for specific vehicle requirements
• Professional technical guidance and installation support
• Comprehensive 12-month warranty coverage
• Competitive pricing through optimized supply chains
• Rigorous quality control meeting industry standards
• Efficient global shipping via multiple carriers