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Home >> Mercury >> 2001 >> Villager Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Engine Sensors & Switches >> Sensors >> Heated Oxygen Sensor

Heated Oxygen Sensor

Faults in Heated Oxygen Sensor (HO2S) or circuit should set a Diagnostic Trouble Code (DTC). See QUICK TEST in SELF-DIAGNOSTICS - VILLAGER article. To check HO2S heater resistance, go to step 26)  of TEST H under SYSTEM TESTS in SELF-DIAGNOSTICS - VILLAGER article.