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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Engine Controls - Self-Diagnostics - 2.5) >> Diagnostic Tests >> DTC P1143: Front Heated Oxygen Sensor Lean Shift Monitoring >> Probable Cause

Probable Cause

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Malfunction is detected when the maximum and minimum voltage from the sensor are not reached to the specified voltages. Possible causes are:

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