Diagnostic Method: Notes

When the oxygen sensor output voltage changes from 0.55 V (rich) to 0.15 V (lean), calculate the minimum response time for output change between 0.5 V and 0.2 V for the judgment criteria.

Fig 1: Diagnostic Method For General Driving Cycle

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Calculate the minimum value of 0.3 V to 0.5 V output change response time as judgment value, when the oxygen sensor output voltage changes from 0.25 V (lean) to 0.55 V (rich).

Fig 1: Diagnostic Method For General Driving Cycle

Courtesy of SUBARU OF AMERICA, INC.