P2243

DTC P2243 Linear O2 Sensor Reference Voltage Circuit/Open (Bank1, Sensor1)

DESCRIPTION




The linear oxygen sensor is mounted on the front side of the Catalytic Converter (warm-up catalytic converter) or in the front exhaust pipe, which detects a wide range of air/fuel ratio in the exhaust gas from rich to lean regions. This linear oxygen sensor produces a current that corresponds to a specific air/fuel ratio. The ECM monitors this signal and determines whether the air/fuel mixture is rich or lean. The ECM constantly monitors the HO2S and increases or decreases the fuel injection duration by using the HO2S signal, which is called closed-loop fuel control operation.

DTC Detecting Condition:

Schematic Diagram:

Step 1:

Step 2:

INSPECTION PROCEDURES