DTC P2271 O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 2): DTC Detecting Condition

Detected when two consecutive driving cycles with fault occur.
GENERAL DESCRIPTION <Ref. to DTC P2271 O2 SENSOR SIGNAL BIASED/STUCK RICH (BANK 1 SENSOR 2) , Diagnostic Trouble Code (DTC) Detecting Criteria.>

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to OPERATION , Clear Memory Mode.>, and Inspection Mode <Ref. to PROCEDURE , Inspection Mode.>.