HEATED OXYGEN SENSOR (HO2S) [SKYACTIV-G 2.0, SKYACTIV-G 2.5]
id0140g2004700
Purpose/Function
• Detects the oxygen concentration (theoretical air/fuel ratio) in the exhaust gas as basic information for mainly determining the fuel injection amount and as information for determining the deterioration of catalytic converter.
• Detects the oxygen concentration (theoretical air/fuel ratio) in the exhaust gas and sends it to the PCM as an oxygen concentration (theoretical air/fuel ratio) signal.
Construction
• Installed on the rear side of the exhaust manifold.
• A zirconia element has been adopted as the detecting element for detecting the oxygen concentration (theoretical air/fuel ratio).
Operation
• Sends the signal, which fluctuates according to the oxygen concentration (theoretical air/fuel ratio), to the PCM.
• The PCM applies approx. 1.5 V to the HO2S input voltage to prevent incorrect diagnosis of the HO2S input voltage.
HO2S characteristic
Fail-safe
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DTC No.
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Fail-safe function
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P0037:00
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• Stops fuel feedback control
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P0038:00
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• Stops fuel feedback control
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