HEATED OXYGEN SENSOR (HO2S) [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION)]

id0140h4004700


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.
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•  A zirconia element has been adopted as the detecting element for detecting the oxygen concentration (theoretical air/fuel ratio).

Operation

•  Inputs the signal, which fluctuates according to the oxygen concentration (theoretical air/fuel ratio), to the PCM.
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HO2S characteristic

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Fail-safe

DTC No.

Fail-safe function
P0037:00
•  Stops fuel feedback control
P0038:00
•  Stops fuel feedback control
P0054:00
•  Stops fuel feedback control of HO2S
P0137:00
•  Fixes duty value of A/F sensor heater
•  Stops fuel feedback control of A/F sensor