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Home >> Isuzu >> 2004 >> Axiom Base, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Information & Procedures >> On Vehicle Service >> Heated Oxygen Sensor (HO2S) >> Inspection Procedure

Inspection Procedure

All four sensors are identical. Inspect each in the same way.

  1. Inspect the pigtail and the electrical connector for grease, dirt, corrosion, and bare wires or worn insulation.
  2. Inspect the louvered end of the sensor for grease, dirt, or other contaminations.
Fig 1: Inspecting Pigtail
G02788882Courtesy of ISUZU MOTOR CO.