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Home › Mazda › 2010 › 5 Touring, 2.3 3 › Repair and Diagnosis › Engine Performance › Engine Control Systems › Engine Control System [L3] › Heated Oxygen Sensor (Ho2S) Inspection › HO2S Circuit Open/short Inspection › Open circuit

Open circuit

If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- HO2S terminal A and PCM terminal 2Q
- HO2S terminal B and PCM terminal 2AV