Electrical system oxygen sensor 31439622 Air flow sensor O2 sensor for Volv o Lambda sensor

Product Description:

 
Air fuel ratio sensor
OE NO.:   31439622  31422064

Applicable vehicle type: For VO LVO

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.

O2 sensor Symptoms of faults:

• Significant increase in fuel consumption: Due to inaccurate signals, the ECU cannot precisely control fuel injection.
• Engine idling jitter and lack of power: Poor combustion due to overly rich or lean air-fuel mixture.
• Dashboard warning light on: Typically the engine fault light or check engine light, with fault codes often being P0130-P0135 (related to the front oxygen sensor) or P0140-P0141 (related to the rear oxygen sensor).

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