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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1656 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> DTC P0161: O2 Heater Circuit (Bank 2, Sensor 2)

DTC P0161: O2 Heater Circuit (Bank 2, Sensor 2)

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DTC P0161: O2 HEATER CIRCUIT (BANK 2, SENSOR 2)

Description:  See the description for DTC P0135 .
Possible Causes:  See the possible causes for DTC P0135 .
Diagnostic Aids: 
  • Check the HO2S electrical connector for damage, corrosion, and water intrusion.
  • Damaged HO2S heater
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST DW .