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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Qr25DE >> DTC P0037, P0038: Ho2S2 Heater >> Description >> System Description

System Description

Fig 1: HO2S2 Heater System Description
G00776904Courtesy of NISSAN MOTOR CO., U.S.A.

The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine coolant temperature.

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