The sensors react in accordance with increases and decreases in the fuel injection volume Standard

Tester Display (Sensor)

Injection Volumes

Status

Voltages

AFS B1 S1

+25 %

Rich

Less than 3.0

(A/F)

-12.5 %

Lean

More than 3.35

O2S B1 S2

+25 %

Rich

More than 0.5

(HO2)

-12.5 %

Lean

Less than 0.4

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