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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P1143, P1163: Ho2S1 >> Diagnostic Procedure >> 5. Check Heated Oxygen Sensor 1

5. Check Heated Oxygen Sensor 1

Refer to COMPONENT INSPECTION .

OK or NG 

  1. OK: GO TO 6.
  2. NG: Replace malfunctioning heated oxygen sensor 1.
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