General Information

Engine Control
P2270 HO2S Signal Stuck Lean (Bank 1 / Sensor 2) - General Information

Component Location





General Description

In the catalytic process, CO, H2, and HC are oxidized to form CO2 and H2O, while the constituents of NOx are reduced to N2 and O2. A three-way catalytic converter and a closed-loop control system are essential elements in achieving adequate reductions in all three pollutants. The heated oxygen sensor on the back of the Catalytic Converter (warm-up catalytic converter) detects the aging of the converter.

DTC Detecting Condition





Schematic Diagram





Signal Waveform