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Mazda
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2022
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3 Base
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Repair and Diagnosis
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Engine Performance
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System
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On-Board Diagnostic - Introduction
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Basic Knowledge
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Functions
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On-Board Diagnostic (OBD) test mode
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Mode 5: HO2S monitor test
Mode 5: HO2S monitor test
Mode 5 reads out the results of HO2S monitor test.
The M-MDS does not support because it substitutes for Mode 6.