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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0134, P0154: Ho2S1 >> Diagnostic Procedure >> 4. Check Heated Oxygen Sensor 1

4. Check Heated Oxygen Sensor 1

Refer to COMPONENT INSPECTION  .

OK or NG 

OK: GO TO 5.

NG: Replace malfunctioning heated oxygen sensor 1.

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