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Home >> Nissan-Datsun >> 2006 >> Quest S >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0137 To P0445 >> DTC P0138, P0158 Ho2S2 >> On Board Diagnosis Logic >> Notes
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On Board Diagnosis Logic: Notes

The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time.

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