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P2196 - O2 Sensor Signal Biased/Stuck Rich - Bank 1, Sensor 1

P2196 - O2 SENSOR SIGNAL BIASED/STUCK RICH - BANK 1, SENSOR 1

Description:  A heated oxygen sensor (HO2S) indicating rich at the end of a test is trying to correct for an over-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.
Possible Causes:  See the possible causes for DTC P2195.
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST H .