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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 112 (Engine Controls Self-Diagnostics - Pathfinder) >> Diagnostic Tests >> DTC P1143: Bank 1 Heated Oxygen Sensor 1 - Lean Shift Monitoring Or DTC P1163: Bank 2 Heated Oxygen Sensor 1 - Lean Shift Monitoring >> DTC Confirmation Test (Using Generic Scan Tool)

DTC Confirmation Test (Using Generic Scan Tool)

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the following test to check overall function of front HO2S circuit. During this test, 1st trip DTC may not be confirmed.
CAUTION: DO NOT use ECM ground terminals when measuring voltage.
  1. Start engine and warm to normal operating temperature. Backprobing at ECM, measure voltage between ground and ECM terminal No. 35 (bank 1) or No. 16 (bank 2). See Figure and Figure .
  2. While observing voltmeter, increase engine speed to 2000 RPM with no load. The following conditions should exist:
    • Maximum voltage should be more than 0.6 volt at least once.
    • Minimum voltage should be more than 0.1 volt at least once.
    If voltage is not as specified, go to DIAGNOSTIC PROCEDURE . If voltage is as specified, system is okay at this time.
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