Why does OBD II require oxygen sensors to be heated?
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Q20: The EGR monitor is an intrusive test,
Q21: Which monitor is used to detect malfunctions
Q22: OBD II requires that the EGR system
Q23: Explain the function of the heated oxygen
Q24: Explain the purpose of the catalyst efficiency
Q26: What is indicated to the PCM if
Q27: The evaporative emission system is designed to
Q28: Explain the function of the evaporative emissions
Q29: The catalyst efficiency monitor compares the signals
Q30: Why do we need an EGR valve
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