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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Qr25DE >> DTC P0133: Ho2S1 >> Component Inspection >> Heated Oxygen Sensor 1 >> With CONSULT-II
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With CONSULT-II

  1. Start engine and warm it up to normal operating temperature.
  2. Select "MANU TRIG" and adjust "TRIGGER POINT" to 100% in "DATA MONITOR" mode with CONSULT-II
  3. Select "HO2S1 (B1)" and "HO2S1 MNTR (B1)".
  4. Hold engine speed at 2, 000 RPM under no load during the following steps.
  5. Touch "RECORD" on CONSULT-II screen.
    Fig 1: Identifying Data Monitor Mode Of Consult-II
    G00777031Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Check the following.
    • "HO2S1 MNTR (B1)" in "DATA MONITOR" mode changes from "RICH" to "LEAN" to "RICH" more than 5 times in 10 seconds.

      5 times (cycles) are counted as shown.

      Fig 2: Identifying HO2S1 MNTR (B1) Cycles
      G00777032Courtesy of NISSAN MOTOR CO., U.S.A.
    • "HO2S1 (B1)" voltage goes above 0.6V at least once.
    • "HO2S1 (B1)" voltage goes below 0.3V at least once.
    • "HO2S1 (B1)" voltage never exceeds 1.0V.
      Fig 3: Identifying HO2S1 MNTR (B1) Voltage
      G00777033Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
    • Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
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