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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls - Powertrain DTC Charts & Descriptions - (Hybrid)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> DTC P2271: O2 Sensor Signal Stuck Rich - Bank 1, Sensor 2

DTC P2271: O2 Sensor Signal Stuck Rich - Bank 1, Sensor 2

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P2271 - O2 SENSOR SIGNAL STUCK RICH - BANK 1, SENSOR 2

Description:  See the description for DTC P2270.
Possible Causes:  See the possible causes for DTC P2270.
Diagnostic Aids: 
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST H .