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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0031, P0032, P0051, P0052: Ho2S1 Heater >> Description >> System Description

System Description

Fig 1: Identifying System Description Specifics
G00795676Courtesy of NISSAN MOTOR CO., U.S.A.

The ECM performs ON/OFF control of the heated oxygen sensor 1 heater corresponding to the engine speed and engine coolant temperature. The duty percent varies with engine coolant temperature when engine is started.