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Home >> Honda >> 2000 >> CR-V SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Engine Controls - Self-Diagnostics - 4.3L) >> Diagnostic Trouble Code Identification >> DTC P1154: Ho2S Transition Time Ratio Bank 2, Sensor 1 >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2000 Isuzu Hombre. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform On-Board Diagnostic II (OBD-II) System Check. See SELF-DIAGNOSTICS - INTRODUCTION article. Retrieve and record FREEZE FRAME and/or FAIL RECORDS data for each DTC set. Go to next step.
  2. If any other DTCs are set, diagnose affected DTCs. If no other DTCs are set, go to next step.
  3. T at 1200-2000 RPM for 2 minutes. Using scan tool, read HO2S BANK 2 SENSOR 1 voltage. If voltage rapidly switches from less than 0.3 volt to more than 0.6 volt, go to next step. If voltage does not switch as specified, go to step  5.
  4. With engine speed still at 1200-2000 RPM, read LOOP MODE. If scan tool displays CLOSED LOOP, see DIAGNOSTIC AID S. If scan tool does not display CLOSED LOOP, go to step  8.
  5. If voltage stays within 0.3-0.6 volt longer than it stays out of range, go to step  8. If voltage stays outside 0.3-0.6 volt longer than it stays within range, go to next step.
  6. Check for faulty connection at VCM HO2S (bank 2, sensor 1) harness connector terminal. If connection is okay, go to next step. If faulty connection is found, go to step  10.
  7. Check for faulty connection at HO2S (bank 2, sensor 1) harness connector. If faulty connection is found, go to step  10. If connection is okay, go to next step.
  8. Check for HO2S contamination caused by leaded fuel, incorrect gasket sealer or over-rich operation. If problem is found, go to next step. If no problem is found, go to step  11.
  9. Replace HO2S (bank 2, sensor 1). After replacing HO2S sensor, go to step  11.
  10. Repair connections as necessary. After repairs, go to next step.
  11. Using scan tool, select DTC, CLEAR INFO function. Start engine and allow it to reach operating temperature. Using scan tool, select DTC, SPECIFIC function and enter DTC P1154. Operate vehicle within conditions required to set DTC. If scan tool displays RAN AND PASSED, go to next step. If scan tool does not display RAN AND PASSED, return to step  2.
  12. Using scan tool, select Read and Record INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, diagnose affected DTCs. If no DTCs are displayed, system is okay.
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