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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 >> Possible Causes

Possible Causes

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.

ECM illuminates MIL and sets DTC P1143 (Bank 1) or P1163 (Bank 2) when maximum and minimum voltage from sensor do not reached specified voltages. Possible causes are:

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