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Mazda
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2005
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3 s, 4D Hatchback, Standard
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Middle Heated Oxygen Sensor (Ho2S) Inspection [CALIFORNIA Emission Regulation Applicable Model]
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Middle HO2S Circuit Open/Short Inspection (Sensor)
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Short circuit
Short circuit
If there is continuity, there is a short circuit. Repair or replace the wiring harness.
HO2S terminal A and body GND
HO2S terminal A and power supply
HO2S terminal B and power supply