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Home >> Nissan-Datsun >> 2021 >> Altima SL, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Pr25DD) (1 Of 3) >> System Description >> Component Location >> Engine Control System >> Air Fuel Ratio (A/F) Sensor 1 >> Individual Function Within The System
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Individual Function Within The System

A/F Sensor 1 

The A/F sensor 1 transmits the signal of detected oxygen concentration in the exhaust gas to ECM.

A/F Sensor 1 Heater 

The A/F sensor 1 heater activates A/F sensor 1.