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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> P0150 - O2 Circuit (Bank 2, Sensor 1)

P0150 - O2 Circuit (Bank 2, Sensor 1)

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DTC DESCRIPTION P0150 - O2 CIRCUIT (BANK 2, SENSOR 1)

Description:  This DTC sets when a concern is detected with one of the circuits used to determine the oxygen content in the exhaust gas.
Possible Causes: 
  • UO2S21 circuit open
  • UO2S21 circuit short to ground
  • UO2S21 circuit short to voltage
  • UO2SGREF21 circuit open
  • UO2SGREF21 circuit short to ground
  • UO2SGREF21 circuit short to voltage
  • UO2SPC21 circuit short to ground
  • UO2SPC21 circuit short to voltage
  • UO2SPCT21 circuit short to ground
  • UO2SPCT21 circuit short to voltage
  • Incorrect connections
  • Damaged or corroded pins
  • Exhaust temperature significantly higher than expected
  • Damaged universal heated oxygen sensor bank 2, sensor 1 (HO2S21) heater
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test DZ .