AIR FUEL RATIO (A/F) SENSOR [SKYACTIV-G 2.0, SKYACTIV-G 2.5]

id0140g2004800


Purpose/Function

•  Detects the oxygen concentration (all-range air/fuel ratio) in the exhaust gas as basic information for mainly determining the fuel injection amount.
•  Detects the oxygen concentration (all-range air/fuel ratio) in the exhaust gas and inputs it to the PCM as an oxygen concentration (all-range air/fuel ratio) signal.

Construction

•  Installed to the exhaust manifold.
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•  A zirconium element has been adopted as the detecting element for detecting the oxygen concentration (all-range air/fuel ratio).

Operation

•  Inputs the signal, which fluctuates according to the oxygen concentration (all-range air/fuel ratio), to the PCM.
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A/F sensor characteristic

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Fail-safe

DTC No.

Fail-safe function
P0031:00
•  Stops the fuel feedback control.
P0032:00
•  Stops the fuel feedback control.
P0130:00
•  Fixes the duty value of the A/F sensor heater.
•  Stops the fuel feedback control of the A/F sensor.
P0131:00
•  Fixes the duty value of the A/F sensor heater.
•  Stops the fuel feedback control of the A/F sensor.
P0132:00
•  Fixes the duty value of the A/F sensor heater.
•  Stops the fuel feedback control of the A/F sensor.
P0134:00
•  Fixes the duty value of the A/F sensor heater.
•  Stops the fuel feedback control of the A/F sensor.
P2237:00
•  Fixes the duty value of the A/F sensor heater.
•  Stops the fuel feedback control of the A/F sensor.
P2251:00
•  Fixes the duty value of the A/F sensor heater.
•  Stops the fuel feedback control of the A/F sensor.