P2271

DTC P2271 O2 Sensor Signal Stuck Rich (Bank1/Sensor1)

DESCRIPTION
In the catalytic process, CO, H2, and HC are oxidized to form CO2 and H2S, 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:

Signal Waveform:

Step 1 - 3:

INSPECTION PROCEDURES